* now splits everything up into independent static libraries.
* fixed a great deal of incorrect #include statements. all headers must
now be specified with their full path relative to source. exception: if
file being included and including file are in the same directory, no
path needed.
use <> when relying on the build system's include path (e.g. for system
headers and external libraries, e.g. boost), otherwise "".
* temporarily renamed maths/Vector2D to Vector2D_Maths to avoid
conflict. these should be merged.
* hacked around VC linker stupidness when building static libs; texture
codecs must now be registered manually.
This was SVN commit r3931.
