patch 7.4.1775
Problem:    The rgb.txt file is not installed.
Solution:   Install the file. (Christian Brabandt)
diff --git a/src/Makefile b/src/Makefile
index 716dae7..f0f892b 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1076,6 +1076,9 @@
 ### Name of the bugreport file target.
 SYS_BUGR_FILE	= $(DESTDIR)$(SCRIPTLOC)/bugreport.vim
 
+### Name of the rgb.txt file target.
+SYS_RGB_FILE   = $(DESTDIR)$(SCRIPTLOC)/rgb.txt
+
 ### Name of the file type detection file target.
 SYS_FILETYPE_FILE = $(DESTDIR)$(SCRIPTLOC)/filetype.vim
 
@@ -2167,6 +2170,9 @@
 	chmod $(VIMSCRIPTMOD) $(MSWIN_FILE)
 	$(INSTALL_DATA) $(SCRIPTSOURCE)/evim.vim $(EVIM_FILE)
 	chmod $(VIMSCRIPTMOD) $(EVIM_FILE)
+# install the rgb.txt file
+	$(INSTALL_DATA) $(SCRIPTSOURCE)/rgb.txt $(SYS_RGB_FILE)
+	chmod $(VIMSCRIPTMOD) $(SYS_RGB_FILE)
 # install the bugreport file
 	$(INSTALL_DATA) $(SCRIPTSOURCE)/bugreport.vim $(SYS_BUGR_FILE)
 	chmod $(VIMSCRIPTMOD) $(SYS_BUGR_FILE)