* improve register handling for not and unary minus operator by using a new register for the destination

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@24678 3ad0048d-3df7-0310-abae-a5850022a9f2
 * wndclass was defined with T stringtypes, even though aliased to -A variants.
   W variants were ok. Rearranged to more normal ifdef unicode setup.


git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@24679 3ad0048d-3df7-0310-abae-a5850022a9f2