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

 BINARIES = bfs_test min_cost_flow

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

 include ../makefile