CDRIVER-190 Check overflow - fix build
CDRIVER-193 Build and test with Visual Studio on Windows
Merge pull request #68 from fotonauts/typo_for_mongo_count

type for mongo_count
CDRIVER-194 C driver 0.8 release 
CDRIVER-192 alllow optional index name - index name should follow convention (API change)
CDRIVER-172 mongo_read_response: insufficient memory allocated for "out"
merge mongodb