openbor Tools

Some code cleanups in pp_parser:
* Removed the one and only use of tracecalloc() in the engine.
* Fixed some unnecessary code duplication in pp_context_destroy().
* Removed comment parsing since pp_lexer now consumes comments as of r2953.

WIZ Now builds on Windows.

See http://www.caskeys.com/dc/?p=1155

Moved preprocessor invocation from load_script() to Script_AppendText(). Macros in animationscripts can now be accessed in @cmd statements.

Made the OpenGL backend stop writing debug messages to stderr every time the brightness or gamma changes.

Replaced global variables in pp_parser with a new structure called pp_context. It's better object-oriented design, and will also allow multiple pp_parser objects to coexist in the engine.

Remove HRESULT return types from pp_parser, since it shuts down the engine as soon as it encounters an error.

Call pp_parser_reset() before parsing in the test program.

Add support for #warning and #error, print line numbers in error messages, fix directives inside of conditionals, and remove some commented debugging printfs.

The preprocessor now has complete support for #ifdef, #ifndef, #else, #endif, and #undef.