* builtins.c (define_builtin_type, builtin_types): Delete.
(define_builtin): Rewritten to take just the built-in code,
the function's name, type and fallback library function name.
All built-ins used by Java are implicit and BUILT_IN_NORMAL.
(initialize_builtins): Overhaul to define the GCC builtins
used by gcj manually, providing the Java run-time's
implementations as the fallback library function.
* libjava.lang/MathBuiltin.java: New test case.
* libjava.lang/MathBuiltin.out: New file.
From-SVN: r67632
