Changed assert's to BOOST_ASSERT's.

Made array sizes explicit to fix MWCW problems.


[SVN r26723]

libs/regex

@@ -1 +1 @@
-Subproject commit 9781fe315087631cd8a56c31cecdfebde66d3776
+Subproject commit 2a248d1f8746155378db81037db306ffce9cdc0c