Update various runtime files.
diff --git a/runtime/syntax/cmake.vim b/runtime/syntax/cmake.vim
index 8e54d51..58a7079 100644
--- a/runtime/syntax/cmake.vim
+++ b/runtime/syntax/cmake.vim
@@ -4,7 +4,7 @@
 " Language:     CMake
 " Author:       Andy Cedilnik <andy.cedilnik@kitware.com>
 " Maintainer:   Karthik Krishnan <karthik.krishnan@kitware.com>
-" Last Change:  2012 Jun 01
+" Last Change:  2015 Sep 25
 " 		(Dominique Pelle added @Spell)
 " Version:      $Revision: 1.10 $
 "
@@ -31,9 +31,9 @@
             \ contained oneline contains=CONTAINED,cmakeTodo
 syn region cmakeEnvironment start=/\$ENV{/ end=/}/
             \ contained oneline contains=CONTAINED,cmakeTodo
-syn region cmakeString start=/"/ end=/"/ 
+syn region cmakeString start=/"/ end=/"/
             \ contains=CONTAINED,cmakeTodo,cmakeOperators
-syn region cmakeArguments start=/(/ end=/)/ 
+syn region cmakeArguments start=/(/ end=/)/
             \ contains=ALLBUT,cmakeArguments,cmakeTodo
 syn keyword cmakeSystemVariables
             \ WIN32 UNIX APPLE CYGWIN BORLAND MINGW MSVC MSVC_IDE MSVC60 MSVC70 MSVC71 MSVC80 MSVC90
@@ -44,11 +44,11 @@
            \ nextgroup=cmakeArguments
 
 " The keywords are generated as:  cmake --help-command-list | tr "\n" " "
-syn keyword cmakeStatement 
+syn keyword cmakeStatement
       \ ADD_CUSTOM_COMMAND ADD_CUSTOM_TARGET ADD_DEFINITIONS ADD_DEPENDENCIES ADD_EXECUTABLE ADD_LIBRARY ADD_SUBDIRECTORY ADD_TEST AUX_SOURCE_DIRECTORY BUILD_COMMAND BUILD_NAME CMAKE_MINIMUM_REQUIRED CONFIGURE_FILE CREATE_TEST_SOURCELIST ELSE ELSEIF ENABLE_LANGUAGE ENABLE_TESTING ENDFOREACH ENDFUNCTION ENDIF ENDMACRO ENDWHILE EXEC_PROGRAM EXECUTE_PROCESS EXPORT_LIBRARY_DEPENDENCIES FILE FIND_FILE FIND_LIBRARY FIND_PACKAGE FIND_PATH FIND_PROGRAM FLTK_WRAP_UI FOREACH FUNCTION GET_CMAKE_PROPERTY GET_DIRECTORY_PROPERTY GET_FILENAME_COMPONENT GET_SOURCE_FILE_PROPERTY GET_TARGET_PROPERTY GET_TEST_PROPERTY IF INCLUDE INCLUDE_DIRECTORIES INCLUDE_EXTERNAL_MSPROJECT INCLUDE_REGULAR_EXPRESSION INSTALL INSTALL_FILES INSTALL_PROGRAMS INSTALL_TARGETS LINK_DIRECTORIES LINK_LIBRARIES LIST LOAD_CACHE LOAD_COMMAND MACRO MAKE_DIRECTORY MARK_AS_ADVANCED MATH MESSAGE OPTION OUTPUT_REQUIRED_FILES PROJECT QT_WRAP_CPP QT_WRAP_UI REMOVE REMOVE_DEFINITIONS SEPARATE_ARGUMENTS SET SET_DIRECTORY_PROPERTIES SET_SOURCE_FILES_PROPERTIES SET_TARGET_PROPERTIES SET_TESTS_PROPERTIES SITE_NAME SOURCE_GROUP STRING SUBDIR_DEPENDS SUBDIRS TARGET_LINK_LIBRARIES TRY_COMPILE TRY_RUN UNSET USE_MANGLED_MESA UTILITY_SOURCE VARIABLE_REQUIRES VTK_MAKE_INSTANTIATOR VTK_WRAP_JAVA VTK_WRAP_PYTHON VTK_WRAP_TCL WHILE WRITE_FILE
             \ nextgroup=cmakeArguments
-syn keyword cmakeTodo 
-            \ TODO FIXME XXX 
+syn keyword cmakeTodo
+            \ TODO FIXME XXX
             \ contained
 
 " Define the default highlighting.
diff --git a/runtime/syntax/python.vim b/runtime/syntax/python.vim
index f99153f..6161eb3 100644
--- a/runtime/syntax/python.vim
+++ b/runtime/syntax/python.vim
@@ -1,7 +1,7 @@
 " Vim syntax file
 " Language:	Python
 " Maintainer:	Zvezdan Petkovic <zpetkovic@acm.org>
-" Last Change:	2015 Jul 14
+" Last Change:	2015 Sep 15
 " Credits:	Neil Schemenauer <nas@python.ca>
 "		Dmitry Vasiliev
 "
@@ -70,6 +70,7 @@
 " - 'nonlocal' is a keyword in Python 3 and will be highlighted.
 " - 'print' is a built-in in Python 3 and will be highlighted as
 "   built-in below (use 'from __future__ import print_function' in 2)
+" - async and await were added in Python 3.5 and are soft keywords.
 "
 syn keyword pythonStatement	False, None, True
 syn keyword pythonStatement	as assert break continue del exec global
@@ -80,6 +81,7 @@
 syn keyword pythonOperator	and in is not or
 syn keyword pythonException	except finally raise try
 syn keyword pythonInclude	from import
+syn keyword pythonAsync		async await
 
 " Decorators (new in Python 2.4)
 syn match   pythonDecorator	"@" display nextgroup=pythonFunction skipwhite
@@ -230,6 +232,7 @@
   syn keyword pythonExceptions	FileNotFoundError InterruptedError
   syn keyword pythonExceptions	IsADirectoryError NotADirectoryError
   syn keyword pythonExceptions	PermissionError ProcessLookupError
+  syn keyword pythonExceptions	RecursionError StopAsyncIteration
   syn keyword pythonExceptions	TimeoutError
   " builtin exceptions deprecated/removed in Python 3
   syn keyword pythonExceptions	IOError VMSError WindowsError
@@ -286,6 +289,7 @@
   HiLink pythonOperator		Operator
   HiLink pythonException	Exception
   HiLink pythonInclude		Include
+  HiLink pythonAsync		Statement
   HiLink pythonDecorator	Define
   HiLink pythonFunction		Function
   HiLink pythonComment		Comment
diff --git a/runtime/syntax/screen.vim b/runtime/syntax/screen.vim
index 71b3d3e..d576d29 100644
--- a/runtime/syntax/screen.vim
+++ b/runtime/syntax/screen.vim
@@ -1,7 +1,8 @@
 " Vim syntax file
-" Language:         screen(1) configuration file
-" Maintainer:       Nikolai Weibull <now@bitwi.se>
-" Latest Revision:  2010-01-03
+" Language:             screen(1) configuration file
+" Maintainer:           Dmitri Vereshchagin <dmitri.vereshchagin@gmail.com>
+" Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
+" Latest Revision:      2015-09-24
 
 if exists("b:current_syntax")
   finish
@@ -76,12 +77,16 @@
                           \ break
                           \ breaktype
                           \ bufferfile
+                          \ bumpleft
+                          \ bumpright
                           \ c1
                           \ caption
                           \ chacl
                           \ charset
                           \ chdir
+                          \ cjkwidth
                           \ clear
+                          \ collapse
                           \ colon
                           \ command
                           \ compacthist
@@ -104,6 +109,7 @@
                           \ deflogin
                           \ defmode
                           \ defmonitor
+                          \ defmousetrack
                           \ defnonblock
                           \ defobuflimit
                           \ defscrollback
@@ -113,6 +119,7 @@
                           \ defutf8
                           \ defwrap
                           \ defwritelock
+                          \ defzombie
                           \ detach
                           \ digraph
                           \ dinfo
@@ -126,7 +133,9 @@
                           \ fit
                           \ flow
                           \ focus
+                          \ focusminsize
                           \ gr
+                          \ group
                           \ hardcopy
                           \ hardcopy_append
                           \ hardcopydir
@@ -155,6 +164,7 @@
                           \ maxwin
                           \ meta
                           \ monitor
+                          \ mousetrack
                           \ msgminwait
                           \ msgwait
                           \ multiuser
@@ -182,6 +192,7 @@
                           \ register
                           \ remove
                           \ removebuf
+                          \ rendition
                           \ reset
                           \ resize
                           \ screen
@@ -197,6 +208,7 @@
                           \ sleep
                           \ slowpaste
                           \ sorendition
+                          \ sort
                           \ source
                           \ split
                           \ startup_message
@@ -210,6 +222,7 @@
                           \ time
                           \ title
                           \ umask
+                          \ unbindall
                           \ unsetenv
                           \ utf8
                           \ vbell
@@ -228,6 +241,7 @@
                           \ xon
                           \ zmodem
                           \ zombie
+                          \ zombie_timeout
 
 hi def link screenEscape    Special
 hi def link screenComment   Comment