FW-138. renaming error_t to ow_error_t
FW-138. changing ow_error_t to owerror_t as scons objectify function fails to parse regular expressions
FW-138. changing error_t to owerror_t in Scons for python platform
FW-138- replacing error_t for owerror_t in other files
FW-138. adding shared library cc flags