Simplify usage of some TDF_* flags.

Simplify usage of some TDF_* flags.

2017-05-26  Martin Liska  <mliska@suse.cz>

	* cfg.c (check_bb_profile): Do not use TDF_COMMENT and print
	always leading ';; '.
	(dump_bb_info): Likewise.
	(brief_dump_cfg): Likewise.
	* cfgrtl.c (print_rtl_with_bb): Do not use TDF_COMMENT.
	* dumpfile.c: Remove usage of TDF_VERBOSE.
	* dumpfile.h (enum dump_kind): Likewise.
	(dump_gimple_bb_header): Do not use TDF_COMMENT.
	* print-tree.c (debug_verbose): Remove.
	* tree-cfg.c (gimple_dump_cfg): Do not use TDF_COMMENT.
	(dump_function_to_file): Remove dumps guarded with TDF_VERBOSE.
	* tree-diagnostic.c (default_tree_printer): Replace
	TDF_DIAGNOSTIC with TDF_SLIM.

From-SVN: r248514