Big bang xmas commit

Work I did over the holidays:
- full translation of source code;
- updated build scripts for Linux and MinGW;
- added build scripts for Microsoft Visual C++ 6.0, 2002, 2003, 2005,
2008, 2010 and 2013 (only 2012 is missing at the moment);
- fixed code to stop multiple compiler warnings for parser files (*.l);
- added temporary fix for invalid pointer dereference; will need to dig
deeper in lexer file to figure out a better fix;
- replaced explicit date with __DATE__ macro;
- probably something else, I don't remember everything now.