custom mapper support

Conflicts:

	spyne/util/sqlalchemy.py
Merge pull request #255 from dmugtasimov/support_for_custom_mapper

custom mapper support
fix_for_get_spyne_type
Merge pull request #256 from dmugtasimov/fix_for_get_spyne_type

fix_for_get_spyne_type
Merge remote-tracking branch 'arskom/master'
fix typo in error message.
fix typo in __orig__ assignment
minor
remove stupid loop
use newest mandatory in xml schema test.
minor