4.99.4.1:

2011-09-21  Murray Cumming  <murrayc@murrayc.com>

	ServerProvider: Added supports_operation() method overloads.

	* libgda/src/serverprovider.[hg|ccg]: Because some parameters may be NULL.

2011-09-21  Murray Cumming  <murrayc@murrayc.com>
 
	Connection: Add statement_to_sql() method overloads.
    
	* libgda/src/connection.[hg|ccg]: Because some parameters can be NULL.