[INTERPRETER]
* BUG: GB.SubstString() API now can take a void substitution string. It
returns NULL instead of doing a segfault. Consequently,
RegExp.Replace() from gb.pcre can take a null replace string without
crashing.
git-svn-id: svn://localhost/gambas/trunk@7261 867c0c6c-44f3-4631-809d-bfa615b0a4ec