Merge 'current' into 'mssql_tweaks'

r7308@hlagh (orig r7307):  caelum | 2009-08-11 20:58:06 -0400
fix CURRENT_TIMESTAMP default for MySQL
r7309@hlagh (orig r7308):  caelum | 2009-08-12 07:26:13 -0400
fix mysql tests for CURRENT_TIMESTAMP
r7310@hlagh (orig r7309):  caelum | 2009-08-12 07:51:05 -0400
add TODO comment for mysql

diff --cc Makefile.PL
Simple merge