+ Win32 SEH: actually install the exception handler around main procedure (write to fs:(0) was missing).

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@26239 3ad0048d-3df7-0310-abae-a5850022a9f2
* fcl-db TMemDataSet show Filter property is unimplemented; mantis issue #22051



git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@26240 3ad0048d-3df7-0310-abae-a5850022a9f2