pa.h (TARGET_JUMP_IN_DELAY): New target flag to allow/disallow jump instructions in call delay slots.

	* pa.h (TARGET_JUMP_IN_DELAY): New target flag to allow/disallow
	jump instructions in call delay slots.
	(TARGET_SWITCHES): Add -mjump-in-delay and -mno-jump-in-delay.
	Provide -mno alternatives for most options.
	(output_call): Declare.

From-SVN: r4914