Making stable version 0.6

git-svn-id: https://projects.coin-or.org/svn/CoinBazaar/projects/GIMPy/GrUMPy/stable/0.6@1109 5eb3cf9a-c56f-4155-9a08-806ae8551a6d
Preparing release 0.6.0

git-svn-id: https://projects.coin-or.org/svn/CoinBazaar/projects/GIMPy/GrUMPy/stable/0.6@1110 5eb3cf9a-c56f-4155-9a08-806ae8551a6d
Merging r1112 from trunk and re-running autotools

git-svn-id: https://projects.coin-or.org/svn/CoinBazaar/projects/GIMPy/GrUMPy/stable/0.6@1113 5eb3cf9a-c56f-4155-9a08-806ae8551a6d
Fixing conflict
Resolving conflict
Fixing guess about objective sense
Merge branch 'v0.6'