dbapi currently depends on being subclassed and having the subclasses impelement...

dbapi currently depends on being subclassed and having the subclasses impelement certain functions (that aren't even implemented IN dbapi, so a particular child has no idea what functions are actually required).  Try to make this cleared by adding stubs in dbapi.  There should be no behavior change here because these cases would be Attribute errors in the current scheme.  Also add a horribly bad testdbapi with stub funcs to use in testing code.  Remove regexes with possibly faster string comparisons.

svn path=/main/trunk/; revision=7752