failing numeric parsing for scinetific/engineering notation.

There is a failure in a single test from test_numeric_parse.py
Distilled to this.

$ python -c 'from Sybase import numeric; numeric("3e5")'
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/usr/lib64/python2.6/site-packages/Sybase.py", line 246, in _cslib_cb
raise Error(_fmt_client(msg), msg)
Sybase.Error: ('Layer: 2, Origin: 4\ncs_convert: cslib user api layer: common library error: The conversion/operation was stopped due to a syntax error in the source field.', <ClientMsgType object at 0x24cca60>)