Disable one peephole optimization for Thumb

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@24635 3ad0048d-3df7-0310-abae-a5850022a9f2
Update jumptabel generation for ARM Thumb

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@24636 3ad0048d-3df7-0310-abae-a5850022a9f2
Add some immediate forms of shift instructions to tcgthumb.a_op_const_reg

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@24637 3ad0048d-3df7-0310-abae-a5850022a9f2