- Updated some autotool files using latest script formats.
- Renamed unittest directory into tests.
- Fixed string functions such as cs_string* and cg_* using size_t instead int.
- Fixed cg_sockect_* functions using size_t or ssize_t instead of int.
- Fixed cg_net_uri_* using size_t instead of int.
- Fixed some compiler warnings using LLVM 3.3 on XCode 4.2.1.
- Fixed some warings usng LLVM 3.3 on XCode 4.2.1.