c-common.h (c_dump_tree), [...]): Change return type from 'int' to 'bool'.

c-common.h (c_dump_tree), [...]): Change return type from 'int' to 'bool'.

(gcc)
	* c-common.h (c_dump_tree), c-dump.c (c_dump_tree),
	langhooks-def.h (lhd_tree_dump_dump_tree),
	langhooks.c (lhd_tree_dump_dump_tree), langhooks.h (*dump_tree):
	Change return type from 'int' to 'bool'.  Replace 0 and 1 with
	true and false in return statements.
(cp)
	* dump.c (cp_dump_tree), cp-tree.h (cp_dump_tree): Change return
	type from 'int' to 'bool'. Replace 0 and 1 with true and false in
	return statements.
(java)
	* lang.c (java_dump_tree): Change return type from 'int' to 'bool'.
	Replace 0 and 1 with true and false in return statements.

From-SVN: r64596