Initial import of PyGLPK 0.3.
Add support for mip_gap parameter.
Add support for cov_cuts, clq_cuts, presolve and binarize parameters.
Add support for fp_heur parameter.
glp_intopt() completely supercedes lpx_intopt as of 4.32.
Merge remote branch 'mvo/master' into mvo

pulling changes by Martijn van Oosterhout to
	src/lp.c
Fixed Makefile so that the test target depends on glpk.so

removed txt versions of README, RELEASE and TODO that came along with
the pull from MVO.
made test target depend on glpk.so.
bump version and update authorship to reflect MVO's work.
Update TODO to track version 4.53 of the manual.  Bump the release
number.