smp: Initialize thread-local compiler_utilities.

smp: Initialize thread-local compiler_utilities.

Split the thread-local parts of compiler_initialize into
compiler_initialize_processor, those of compiler_reset into
compiler_reset_processor.  Split the non-thread-local parts of
ASM_RESET_HOOK into ASM_INIT_HOOK, i.e. i386_reset_hook into
i386_init_hook.  Call the _processor versions in co-processor startup
and SMP-GC-WAITs.

Add compiler_reset_p flag to processor_t so that load-band
(compiler_reset) can notify the other processors to load the new
compiler_utilities into their Registers slots.