added ol_string_free to replace manual frees
Fixing error checking in progress
Merge branch 'master' of https://github.com/infoforcefeed/OlegDB

Conflicts:
	src/aol.c
Fixed op_close to not munmap size 0
Merge branch 'master' of https://github.com/infoforcefeed/OlegDB
fix Possible null pointer dereference: new_bucket
progress on aol bug
fixed segfault, aol test still failing on compression. Command writing compressed slighty
tests stop in failure. AOL jar tests for deleted data on decompress as well. This fixes the AOL test:
moved test cleanup to script. fixed leaked database in test_feature_flags. Fixed comments to c style.
Merge branch 'master' of https://github.com/infoforcefeed/OlegDB

Conflicts:
	src/test.c
few more comments fixed
added myself to the contribution file
Merge pull request #92 from zeroZshadow/master

Several fixes to AOL and tests