Make-lang.in (CXX_TREE_H, [...]): Remove.

Make-lang.in (CXX_TREE_H, [...]): Remove.

gcc/cp
	* Make-lang.in (CXX_TREE_H, CXX_PARSER_H, CXX_PRETTY_PRINT_H):
	Remove.
gcc/objcp
	* Make-lang.in (START_HDRS, cc1objplus-checksum.o)
	(objcp/objcp-lang.o, objcp/objcp-decl.o
	(objcp/objc-runtime-shared-support.o)
	(objcp/objc-gnu-runtime-abi-01.o objcp/objc-next-runtime-abi-01.o)
	(objcp/objc-next-runtime-abi-02.o, objcp/objcp-act.o)
	(objcp/objc-encoding.o, objcp/objc-map.o): Use COMPILE and
	POSTCOMPILE.  Remove explicit dependencies.

From-SVN: r202901