Remove text from plink message dialog which says one should press "y" or "n", where we have buttons already.

git-svn-id: http://heidisql.googlecode.com/svn/trunk@4749 560a3889-bb33-0410-9f33-43a8a102dc09
Disable UNSIGNED and ZEROFILL checkboxes for BIT type columns. See http://www.heidisql.com/forum.php?t=15354

git-svn-id: http://heidisql.googlecode.com/svn/trunk@4750 560a3889-bb33-0410-9f33-43a8a102dc09