[Squirrel-sql-develop] DB2Plugin: patch to add DECFLOAT datatype support

Hello everybody,

yesterday I added support for DB2's vendor specific DECFLOAT datatype to the DB2 Plugin.
As I don't have a sf.net account would it be ok to send you the patch by mail?
So far the functionality seems, although not perfect (i am not able to detect negative zero values properly), very promising.
Reading and updating is already possible (even for the special values like NaN, infinity and negative infinity).
Basically the patch consists of 2 new classes (DB2DecfloatTypeDataTypeComponentFactory and
its accompanying DB2DecfloatTypeDataType) in the net.sourceforge.squirrel_sql.plugins.db2.types package.

Kind regards, Christian Slama