* java-gimplify.c: Use gcc_assert and gcc_unreachable throughout.
	* typeck.c: Likewise.
	* verify-impl.c: Likewise.
	* class.c: Likewise.
	* decl.c: Likewise.
	* jcf-parse.c: Likewise.
	* constants.c: Likewise.
	* check-init.c: Likewise.
	* jcf-write.c: Likewise.
	* verify-glue.c: Likewise.
	* mangle.c: Likewise.
	* expr.c: Likewise.
	* lang.c: Likewise.
	* boehm.c: Likewise.

From-SVN: r110541