fix bson_append_finish_object, adjust bson_error_t, and eliminate VS CRT warnings.
Merge pull request #71 from gerald-lindsly/master

Minor fixes
CDRIVER-194 C driver 0.8 release
Merge remote-tracking branch 'refs/remotes/Mongo/master' into development

Conflicts:
	src/bson.c
	src/gridfs.c
	src/mongo.c
Merge remote-tracking branch 'refs/remotes/Bucket/development' into GitHub-master