* configure.in: If --enable-shared was used, set SET_LIB_PATH to

	* configure.in: If --enable-shared was used, set SET_LIB_PATH to
	$(REALLY_SET_LIB_PATH) in Makefile.
	* Makefile.in (SET_LIB_PATH): New variable.
	(REALLY_SET_LIB_PATH): New variable.
	($(DO_X)): Use $(SET_LIB_PATH).
	(install.all, gcc-no-fixedincludes, $(ALL_MODULES)): Likewise.
	($(NATIVE_CHECK_MODULES), $(CROSS_CHECK_MODULES)): Likewise.
	($(INSTALL_MODULES), $(CONFIGURE_TARGET_MODULES)): Likewise.
	($(ALL_TARGET_MODULES), $(CHECK_TARGET_MODULES)): Likewise.
	($(INSTALL_TARGET_MODULES), $(ALL_X11_MODULES)): Likewise.
	($(CHECK_X11_MODULES), $(INSTALL_X11_MODULES)): Likewise.
	(all-gcc, all-bootstrap, check-gcc, install-gcc): Likewise.
	(install-dosrel): Likewise.
	(all-opcodes): Depend upon all-libiberty.