(ASM_OUTPUT_CASE_LABEL): Always use `swbeg' syntax to
output switch table (m68k.md depends on this to happen).

(LEGITIMATE_PIC_OPERAND_P): Treat a symbol_ref rtx with
SYMBOL_REF_FLAG set a valid PIC operand.

(OVERRIDE_OPTIONS): Turn off function cse when doing pic.

From-SVN: r3593