Added binary_to_hex_append(). --HG-- branch : HEAD

Changed .h ifdef/defines to use <NAME>_H format. --HG-- branch : HEAD

Buffer API change: we no longer support limited sized buffers where writes past limit wouldn't kill the process. They weren't used hardly anywhere, they could have hidden bugs and the code for handling them was too complex. This also changed base64 and hex-binary APIs. --HG-- branch : HEAD

Added binary_to_hex_ucase() --HG-- branch : HEAD

Naming style changes, finally got tired of most of the typedefs. Also the previous enum -> macro change reverted so that we don't use the highest bit anymore, that's incompatible with old indexes so they will be rebuilt. --HG-- branch : HEAD

Added buffer API. Point is to hide all buffer writing behind this API which verifies that nothing overflows. Much better than doing the same checks all around the code, even if it is slightly slower. Buffer reading is still mostly done directly, that isn't such a big security risk and I can't think of a reasonable API for it anyway. --HG-- branch : HEAD

changed all "temporary memory pool" references to "data stack" --HG-- branch : HEAD

size_t fixes for lib/. Changed OFF_T_FORMAT to PRIuOFF_T which is more C99-like. --HG-- branch : HEAD

comment update --HG-- branch : HEAD

Initial revision --HG-- branch : HEAD