Fix build without PACKAGE_MUDLIB_STATS
use gzFile correctly in pakcage/async.c
Fix incremental build dependency.
Eliminate const char* vs char* warnings.
Fix off-by-one in header generation.
Update changelog to be specfic about c++0x.
Merge pull request #86 from sunyc/master

Fixes from feedback of 3.0-alpha3
Merge remote-tracking branch 'upstream/next-3.0' into next-3.0