adding pegmarkdown support library.

git-svn-id: http://svn.code.sf.net/p/retroshare/code/branches/v0.5-gxs-b1@5953 b45a01b8-16f6-495d-af2f-9b41ad6348cc

supportlibs/pegmarkdown/peg-0.1.9/examples/localctx.c

@@ -0,0 +1,13 @@
+#include <stdio.h>
+
+#define YY_CTX_LOCAL
+
+#include "test.peg.c"
+
+int main()
+{
+  yycontext ctx;
+  memset(&ctx, 0, sizeof(yycontext));
+  while (yyparse(&ctx));
+  return 0;
+}