patch 7.4.976
Problem:    When compiling Vim for MSYS2 (linked with msys-2.0.dll), the Win32
            clipboard is not enabled.
Solution:   Recognize MSYS like CYGWIN. (Ken Takata)
diff --git a/src/auto/configure b/src/auto/configure
index 0564b9f..7e1d76d 100755
--- a/src/auto/configure
+++ b/src/auto/configure
@@ -9501,10 +9501,10 @@
 
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for CYGWIN environment" >&5
-$as_echo_n "checking for CYGWIN environment... " >&6; }
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for CYGWIN or MSYS environment" >&5
+$as_echo_n "checking for CYGWIN or MSYS environment... " >&6; }
 case `uname` in
-    CYGWIN*)    CYGWIN=yes; { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+    CYGWIN*|MSYS*)    CYGWIN=yes; { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
                 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for CYGWIN clipboard support" >&5
 $as_echo_n "checking for CYGWIN clipboard support... " >&6; }