Tweaks to various bits.

Until I hear otherwise, Refs aren't used enough to
merit their own assembly.  They are now implemented with locks.

src/libthread/asm-FreeBSD-386.s

@@ -30,20 +30,20 @@ _gotolabel:
 	ret
 
 
-.globl	_xinc
-_xinc:
-	movl 4(%esp), %eax
-	lock incl 0(%eax)
-	ret
-
-.globl	_xdec
-_xdec:
-	movl 4(%esp), %eax
-	lock decl 0(%eax)
-	jz iszero
-	movl $1, %eax
-	ret
-iszero:
-	movl $0, %eax
-	ret
-
+# .globl	_xinc
+# _xinc:
+# 	movl 4(%esp), %eax
+# 	lock incl 0(%eax)
+# 	ret
+# 
+# .globl	_xdec
+# _xdec:
+# 	movl 4(%esp), %eax
+# 	lock decl 0(%eax)
+# 	jz iszero
+# 	movl $1, %eax
+# 	ret
+# iszero:
+# 	movl $0, %eax
+# 	ret
+#