Changes on the LP interface

_FixId => LpId
- handling of not common ids // soplex
LpGlpk row and col erase bug fix
- calling lpx_std_basis before simplex
LpSoplex
- added getter functions
- better m4 file
- integration to the tests
- better handling of unsolved lps

 #!/bin/bash

 for((i=1;i<50;i++))

 do

     echo -n $i ''

     edge_lookup 100 $i

 done