Log Message:
Changes 4.34:
* The GNU MathProg modeling language was supplemented with three
  new built-in functions:
	gmtime    obtaining current calendar time
	str2time  converting character string to calendar time
	time2str  converting calendar time to character string
* For detailed description of these functions see Appendix A in
  the document "Modeling Language GNU MathProg", a new edition of
  which was included in the distribution.
* A bug was fixed in the MIP solver.
* A new makefile was added to build the GLPK DLL with Microsoft
  Visual Studio Express 2008 for 64-bit Windows.