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/left.c

@@ -0,0 +1,17 @@
+#include <stdio.h>
+
+#define YY_INPUT(buf, result, max)			\
+{							\
+  int c= getchar();					\
+  result= (EOF == c) ? 0 : (*(buf)= c, 1);		\
+  if (EOF != c) printf("<%c>\n", c);			\
+}
+
+#include "left.peg.c"
+
+int main()
+{
+  printf(yyparse() ? "success\n" : "failure\n");
+
+  return 0;
+}