* c-common.c (truthvalue_conversion): Rename, update.
	* c-common.h (c_common_truthvalue_conversion): New.
	* c-convert.c (convert): Update.
	* c-lang.c (LANG_HOOKS_TRUTHVALUE_CONVERSION): Redefine.
	* c-parse.in (expr_no_commas, if_prefix, select_or_iter_stmt): Update.
	* c-typeck.c (build_binary_op, build_unary_op,
	build_conditional_expr): Update.
	* fold-const.c (constant_boolean_node, fold): Use langhook.
	* langhooks-def.h (LANGHOOK_INITIALIZER): Update.
	* langhooks.h (struct lang_hooks): New hook.
	* stmt.c (expand_decl_cleanup): Use langhook.
	* tree.h (truthvalue_conversion): Remove.
ada:
	* gigi.h (truthvalue_conversion): Rename.
	* misc.c (LANG_HOOKS_TRUTHVALUE_CONVERSION): Redefine.
	* trans.c (tree_transform): Update.
	* utils2.c (truthvalue_conversion): Rename, update.
	(build_binary_op, build_unary_op): Update.
cp:
	* cp-lang.c (LANG_HOOKS_TRUTHVALUE_CONVERSION): Redefine.
	* cvt.c: Update comment.
	* init.c (expand_cleanup_for_base): Update.
	* semantics.c (finish_parenthesized_expr): Update.
	* typeck.c (cp_truthvalue_conversion): Update.
f:
	* com.c (LANG_HOOKS_TRUTHVALUE_CONVERSION): Redefine.
	(truthvalue_conversion): Rename.  Update.  Make static.
	(ffecom_truth_value): Update.
java:
	* expr.c (truthvalue_conversion): Rename.  Update.
	(expand_compare): Update.
	* java-tree.h (java_truthvalue_conversion): New.
	* lang.c (LANG_HOOKS_TRUTHVALUE_CONVERSION): Redefine.
objc:
	* objc-lang.c (LANG_HOOKS_TRUTHVALUE_CONVERSION): Redefine.

From-SVN: r51880