Add syntax files from upstream vim repository

syntax/rpcgen.vim

@@ -0,0 +1,50 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'vim') == -1
+  
+" Vim syntax file
+" Language:	rpcgen
+" Maintainer:	Charles E. Campbell <NdrOchipS@PcampbellAfamily.Mbiz>
+" Last Change:	Aug 31, 2016
+" Version:	12
+" URL:	http://www.drchip.org/astronaut/vim/index.html#SYNTAX_RPCGEN
+
+if exists("b:current_syntax")
+  finish
+endif
+
+" Read the C syntax to start with
+runtime! syntax/c.vim
+
+syn keyword rpcProgram	program				skipnl skipwhite nextgroup=rpcProgName
+syn match   rpcProgName	contained	"\<\i\I*\>"	skipnl skipwhite nextgroup=rpcProgZone
+syn region  rpcProgZone	contained	matchgroup=Delimiter start="{" matchgroup=Delimiter end="}\s*=\s*\(\d\+\|0x[23]\x\{7}\)\s*;"me=e-1 contains=rpcVersion,cComment,rpcProgNmbrErr
+syn keyword rpcVersion	contained	version		skipnl skipwhite nextgroup=rpcVersName
+syn match   rpcVersName	contained	"\<\i\I*\>"	skipnl skipwhite nextgroup=rpcVersZone
+syn region  rpcVersZone	contained	matchgroup=Delimiter start="{" matchgroup=Delimiter end="}\s*=\s*\d\+\s*;"me=e-1 contains=cType,cStructure,cStorageClass,rpcDecl,rpcProcNmbr,cComment
+syn keyword rpcDecl	contained	string
+syn match   rpcProcNmbr	contained	"=\s*\d\+;"me=e-1
+syn match   rpcProgNmbrErr contained	"=\s*0x[^23]\x*"ms=s+1
+syn match   rpcPassThru			"^\s*%.*$"
+
+" Define the default highlighting.
+if !exists("skip_rpcgen_syntax_inits")
+
+  hi def link rpcProgName	rpcName
+  hi def link rpcProgram	rpcStatement
+  hi def link rpcVersName	rpcName
+  hi def link rpcVersion	rpcStatement
+
+  hi def link rpcDecl	cType
+  hi def link rpcPassThru	cComment
+
+  hi def link rpcName	Special
+  hi def link rpcProcNmbr	Delimiter
+  hi def link rpcProgNmbrErr	Error
+  hi def link rpcStatement	Statement
+
+endif
+
+let b:current_syntax = "rpcgen"
+
+" vim: ts=8
+
+endif