patch 9.0.0314: VDM files are not recognized

Problem:    VDM files are not recognized.
Solution:   Add patterns for VDM files. (Alessandro Pezzoni, closes #11004)

runtime/filetype.vim

@@ -2091,6 +2091,11 @@ au BufNewFile,BufRead */.config/upstart/*.override	       setf upstart
 " Vala
 au BufNewFile,BufRead *.vala			setf vala
 
+" VDM
+au BufRead,BufNewFile *.vdmpp,*.vpp		setf vdmpp
+au BufRead,BufNewFile *.vdmrt			setf vdmrt
+au BufRead,BufNewFile *.vdmsl,*.vdm		setf vdmsl
+
 " Vera
 au BufNewFile,BufRead *.vr,*.vri,*.vrh		setf vera
 

src/testdir/test_filetype.vim

@@ -589,6 +589,9 @@ let s:filename_checks = {
     \ 'usw2kagtlog': ['usw2kagt.log', 'USW2KAGT.LOG', 'usw2kagt.file.log', 'USW2KAGT.FILE.LOG', 'file.usw2kagt.log', 'FILE.USW2KAGT.LOG'],
     \ 'vala': ['file.vala'],
     \ 'vb': ['file.sba', 'file.vb', 'file.vbs', 'file.dsm', 'file.ctl'],
+    \ 'vdmpp': ['file.vpp', 'file.vdmpp'],
+    \ 'vdmrt': ['file.vdmrt'],
+    \ 'vdmsl': ['file.vdm', 'file.vdmsl'],
     \ 'vera': ['file.vr', 'file.vri', 'file.vrh'],
     \ 'verilog': ['file.v'],
     \ 'verilogams': ['file.va', 'file.vams'],

src/version.c

@@ -707,6 +707,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    314,
 /**/
     313,
 /**/