Changes to support building on Alpha NT.

Patches courtesy bob meader <bob@guiduck.com> who seems to be working fast and furious on this port.

js/src/jslock.c

@@ -60,7 +60,8 @@ js_UnlockGlobal(void *id)
 	n = ReadWord(*(P));\
     } while (!js_CompareAndSwap(P, n, n + I));
 
-#if defined(_WIN32) && !defined(NSPR_LOCK)
+/* Exclude Alpha NT. */
+#if defined(_WIN32) && defined(_M_IX86) && !defined(NSPR_LOCK)
 #pragma warning( disable : 4035 )
 
 JS_INLINE int

js/src/jsnum.c

@@ -311,8 +311,11 @@ js_InitNumberClass(JSContext *cx, JSObject *obj)
 	/*where Netscape was calling control87 on Windows...                                        */
 	_control87(MCW_EM+PC_53+RC_NEAR,MCW_EM+MCW_PC+MCW_RC);
 #else
+#if defined (_M_IX86)
+        /* On Alpha platform this is handled via Compiler option */
         _control87(MCW_EM, MCW_EM);
 #endif
+#endif
 #endif
 
 	u.s.hi = JSDOUBLE_HI32_EXPMASK | JSDOUBLE_HI32_MANTMASK;