Disable generation of UMULL when generating thumb1 code

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@26355 3ad0048d-3df7-0310-abae-a5850022a9f2
 * Clean out of $i textrec and filerec includes that are redundant now that cpstrrtl exposes
   those records via system. 

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@26356 3ad0048d-3df7-0310-abae-a5850022a9f2