Moved around Doxygen files so that they are better organized.
Added PCRE for regex support.
Improved exception handling.
Improved CMake scripts.
Added a memory utility.
Added a version utility.
Added an autorelease utility (mostly for opengl).
Other minor things.
Inline'd the math functions.  Since a majority of them call other functions, there's little reason to add overhead for another function call.
fixed compilation issues with last few commits
Fixed(?) image example.