- simple makefile added
- _FixId class added (more clarification needed)
- LinExpr class added
- some higher level interfaces added to LpSolverBase
- minor corrections

 BINARIES = simann_demo

 INCLUDEDIRS= -I. -I.. -I../.. -I../{marci,jacint,alpar,johanna,athos,akos}

 include ../makefile