bug fix for 64 bit linux with stack tracing or time profiling, for the profile...

bug fix for 64 bit linux with stack tracing or time profiling, for the profile stack size use 4096 + the limit from getrlimit (RLIMIT_STACK) instead of the a stack size

aprofile.asm

@@ -741,8 +741,18 @@ init_profiler:
  ifdef LINUX
 	mov	r13,rsi
 	mov	r14,rdi
+
+	mov	rsi,rsp
+	mov	edi,3
+	call	getrlimit
+	mov	rdi,qword ptr[rsp]
+	add	rdi,4096
+	test	eax,eax
+	je	use_stack_limit
 	mov	rdi,qword ptr ab_stack_size
+use_stack_limit:
 	call	malloc
+
 	mov	rsi,r13
 	mov	rdi,r14
  else

atrace.asm

@@ -166,8 +166,18 @@ init_profiler:
  ifdef LINUX
 	mov	r13,rsi
 	mov	r14,rdi
+
+	mov	rsi,rsp
+	mov	edi,3
+	call	getrlimit
+	mov	rdi,qword ptr[rsp]
+	add	rdi,4096
+	test	eax,eax
+	je	use_stack_limit
 	mov	rdi,qword ptr ab_stack_size
+use_stack_limit:
 	call	malloc
+
 	mov	rsi,r13
 	mov	rdi,r14
  else