[tree-ssa] cfghook-ize dump_bb

[Steven Bosscher <s dot bosscher at student dot tudelft dot nl>]

One at a time...

Bootstrapped (c,c++,f95) & tested with no new regressions.  OK?

Gr.
Steven

	* cfghooks.c (dump_bb): Take extra `int indent' argument.
	* cfg.c (dump_bb): Take extra argument to match cfg hook.
	Write out all information about bb that is shared between
	the tree and rtl representations.
	* basic-block.c (dump_bb): Adjust prototype.
	* cfgrtl.c (rtl_dump_bb): Update prototype to match cfg
	hook.  Use indent.
	* flow.c (verify_wide_reg, verify_local_live_at_start):
	Fixup dump_bb calls.
	* tree-cfg.c (dump_tree_bb): Rename to tree_dump_bb.  Remove
	unused `prefix' argument.  Put in tree_cfg_hooks as cfg hook
	for dump_bb.
	(remove_bb, debug_tree_bb, dump_tree_cfg): Call dump_bb.
	* tree-ssa (dump_tree_ssa): Likewise.
	* tree-flow.h (dump_tree_bb): Replace with new tree_dump_bb
	prototype.
	* tree-pretty-print (dump_block_info): Match case of BLOCK,
	SUCC, PRED with dump_bb.

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