* config/c4x/c4x.c: Convert to use GEN_INT.
	(c4x_parallel_process): Rework to handle new repeat loop structure.
	* config/c4x/c4x.md: Convert to use GEN_INT.
	(rptb_end): Convert to use GE test.  Replace uses with clobbers.
	(decrement_and_branch_on_count): Likewise.
	* config/c4x/c4x.h (REPEAT_BLOCK_PROCESS): Deleted hook now that
	loop.c has the desired functionality.
	(rc_reg_operand): New prototype.
	* config/c4x/t-c4x: Can now build all front ends.

From-SVN: r23103