Fix some coverity issues
Honor sdb_set(s,k,NULL) to remove keys
Refactoring and cleanup -16LOC
return 1 if cannot create database
Oops. Fix createdb
Fix #6 - return error if createdb fails
Add CAS argument to sdb_json_geti and inc/dec
Fix freeing invalid pointers
Update TODO
More memory issues fixed
Clarify the python-ctypes errors
Fix coverity warn and make agetn return 0 in case of fail (instead of ut64_max)