[llvm-rc] Add user-defined resources parsing ability. [8/8]

This allows llvm-rc to parse user-defined resources (ref:
msdn.microsoft.com/en-us/library/windows/desktop/aa381054.aspx).
These statements either import files, or put the specified raw data in
the resulting resource file.

Thanks to Nico Weber for his original work in this area.

Differential Revision: https://reviews.llvm.org/D37033

llvm-svn: 314478
diff --git a/llvm/tools/llvm-rc/ResourceScriptParser.h b/llvm/tools/llvm-rc/ResourceScriptParser.h
index 56042f7..7509b8e 100644
--- a/llvm/tools/llvm-rc/ResourceScriptParser.h
+++ b/llvm/tools/llvm-rc/ResourceScriptParser.h
@@ -139,6 +139,7 @@
   ParseType parseHTMLResource();
   ParseType parseMenuResource();
   ParseType parseStringTableResource();
+  ParseType parseUserDefinedResource(IntOrString Type);
   ParseType parseVersionInfoResource();
 
   // Helper DIALOG parser - a single control.