TS-594 Migrate from our own int64 (et.al) to int64_t / stdint types. Tested: gcc 4.1.2, gcc 4.3.2, gcc 4.4, gcc 4.5.1, Intel CC 11.x, Clang (trunk) Platforms: Fedora Core 14 (64-bit), FC8, FreeBSD8, Ubuntu 8.10 Ubuntu 10.10 (64-bit).