backtrace.h (fallback_backtrace): Add "0x55 0x8B 0xEC" as another sequence that can indicate a "pushl %ebp...

	* sysdep/i386/backtrace.h (fallback_backtrace): Add "0x55 0x8B 0xEC"
	as another sequence that can indicate a "pushl %ebp; movl %esp, %ebp"
	function prologue.

From-SVN: r116258