patch 9.0.0600: GYP files are not recognized

Problem:    GYP files are not recognized.
Solution:   Recognize GYP files. (closes #11242)

runtime/filetype.vim

@@ -802,6 +802,9 @@ au BufNewFile,BufRead */etc/group,*/etc/group-,*/etc/group.edit,*/etc/gshadow,*/
 " GTK RC
 au BufNewFile,BufRead .gtkrc,gtkrc		setf gtkrc
 
+" GYP
+au BufNewFile,BufRead *.gyp,*.gypi		setf gyp
+
 " Hack
 au BufRead,BufNewFile *.hack,*.hackpartial			setf hack
 

src/testdir/test_filetype.vim

@@ -240,6 +240,7 @@ let s:filename_checks = {
     \ 'grub': ['/boot/grub/menu.lst', '/boot/grub/grub.conf', '/etc/grub.conf', 'any/boot/grub/grub.conf', 'any/boot/grub/menu.lst', 'any/etc/grub.conf'],
     \ 'gsp': ['file.gsp'],
     \ 'gtkrc': ['.gtkrc', 'gtkrc', '.gtkrc-file', 'gtkrc-file'],
+    \ 'gyp': ['file.gyp', 'file.gypi'],
     \ 'hack': ['file.hack', 'file.hackpartial'],
     \ 'haml': ['file.haml'],
     \ 'hamster': ['file.hsm'],

src/version.c

@@ -699,6 +699,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    600,
 /**/
     599,
 /**/