changed all pointer casts to explicit static_cast or reinterpret_cast.

Added more tests for forward lookahead asserts.


[SVN r12575]

libs/regex

@@ -1 +1 @@
-Subproject commit 5613d77433effb63304c26ab9d93c322378f7f75
+Subproject commit f5082341c0bf224e0aa8d576e93ff81eb44c6bb1