Drawing guichan to memory, and then drawing it to any display system or game framework.

2015-12-06: drawhline and drawvline bug; mouse pos limit; glutPassiveMotionFunc pos transform.
2015-11-14: Adding SDLMOD clip rect process, migrating to glut 3.7.6, fixing glut idle problem (CPU 100%).
2015-11-08: Fixing memory leak (see glTexImage2D), glut input porting is OK now (see glut.hpp).
2015-10-19: glut+sdlmod port, no input porting :).

• Guichan 0.8.2
  http://sourceforge.net/projects/guichan/

• SDLMOD is my mod version of SDL 1.2.15
  http://libsdl.org/

• GLUT 3.7
  https://www.opengl.org/resources/libraries/glut/
  https://www.opengl.org/resources/libraries/glut/glut_downloads.php

• GLUT 3.7.6
  http://www.ece.lsu.edu/xinli/OpenGL/GLUTSetup.htm

• POSIX Threads for Win32
  https://www.sourceware.org/pthreads-win32/