GCG 1.1

features

• add staircase structure information
• add staircase structure detection
• the set partitioning detector can create decompositions with one block
• GCG is now separated in a library and a main file so that you can link against it

bug fixes

• decompositions are now correctly classified
• clean up lots of errors related to inconsistent decompositions
• safe handling of empty problems
• fix detection of identical pricingproblems for aggregation

code cleanup

• use DECfilloutDecdecompFromHashmaps where appropriate to remove redundant code
• Provide DECfillOutFromConstoblock to enable creation of decomposition structures by just specifying constraint to block partition
• Add consistency check function for decompositions
• removed a bit of redundant and leftover code