0.8.21.29:

0.8.21.29:
	TRACE :ENCAPSULATE NIL was broken by a recent function signature
        change in the debugger internals. Fix this, and add support for
        :ENCAPSULATE NIL on x86-64.

        * Pass stream to PRINT-FRAME-CALL from ntrace.lisp.
	* Port over some of Daniel Barlow's fixes to x86-64-assem.S from
          amd64-pthreads-branch, fix fun_end_breakpoint_guts.
        * Fixed some magic constants in the x86-64 runtime
	* Various 64-bit cleanups, #ifdef cleanups in the runtime