Get Irrlicht to compile with IRRLICHT_FAST_MATH on Linux (out-define code which was written for VS and remove #warn which is not a preprocessor command recognized by GCC).
Note that I did this just to do some tests against the fast-math functions - and those tests showed a lot of troubles so I still won't recommend using IRRLICHT_FAST_MATH.


git-svn-id: svn://svn.code.sf.net/p/irrlicht/code@4672 dfc29bdd-3216-0410-991c-e03cc46cb475
- Reverted behaviour of set_used method for vertex buffers and added new method called fill for easy resize vertex buffer with properly filled data by constructor calls. Thanks to Darktib for a report.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code@4673 dfc29bdd-3216-0410-991c-e03cc46cb475
Makefile for the new IrrFontTool links now correctly to libfontconfig (it worked without that previously as libXft had exported some additional symbols in the past).


git-svn-id: svn://svn.code.sf.net/p/irrlicht/code@4674 dfc29bdd-3216-0410-991c-e03cc46cb475