Update pyopencl.vim.

contrib/pyopencl.vim

@@ -69,8 +69,13 @@ syn region pythonCLString
       \ start=+[uU]\=\z('''\|"""\)//CL//+ end="\z1" keepend
       \ contains=@clCode,@clmakoCode
 
+syn region pythonCLRawString
+      \ start=+[uU]\=[rR]\z('''\|"""\)//CL//+ end="\z1" keepend
+      \ contains=@clCode,@clmakoCode
+
 " Uncomment if you still want the code highlighted as a string.
 " hi link pythonCLString String
+" hi link pythonCLRawString String
 
 let b:current_syntax = "pyopencl"