811* Various: User-mode DTrace compiles on ARM (dtrace cmd runs
          but does not currently get passed the USDT behavior); some
	  stuff stubbed out in libproc.
Needed for ARM.
     811* Various: User-mode DTrace compiles on ARM (dtrace cmd runs
          but does not currently get passed the USDT behavior); some
	  stuff stubbed out in libproc.
     815* libdtrace/dt_link.c: Start to implement dt_modtext for ARM.
     815* libdtrace/dt_link.c: Start to implement dt_modtext for ARM.
     816* Various: Changes to compile on 3.6.8/ARM/RaspberryPi kernel.
          ARM is still no good to run. This build *should* compile
	  apart from the very last section on divmod64.c processing,
	  but am releasing to keep current. Theres still a lot
	  of execution time work to do.
     817* linux/sys/regset.h: Fix for i386 build after rearranging for
          ARM.
     818* dtrace.c: dtrace_probe: When checking for Xen probes with
     interrupts disabled, be careful of deref of null ptr.
     818* dtrace.c: dtrace_probe: When checking for Xen probes with
     interrupts disabled, be careful of deref of null ptr.
     819* driver/dtrace_linux.c: Fix xtime_cache_ptr so that
          the timestamp function works on Ubuntu 12.04 (or any >= 3.4
	  kernel).