Add a quick constructor for nsISupportsPRBool as well as make it implement

threadsafe isupports. Stream convs. use it.

xpcom/ds/nsISupportsPrimitives.idl

@@ -272,4 +272,7 @@ interface nsISupportsVoid : nsISupports
     { 0xba, 0xf8, 0x0, 0x80, 0x5f, 0x8a, 0x5d, 0xd7 } }
 #define NS_SUPPORTS_VOID_PROGID "component://netscape/supports-void"
 #define NS_SUPPORTS_VOID_CLASSNAME "Supports void"
+
+extern	NS_COM nsresult NS_NewISupportsPRBool (nsISupportsPRBool ** aResult);
+
 %}

xpcom/ds/nsSupportsPrimitives.cpp

@@ -233,7 +233,7 @@ NS_IMETHODIMP nsSupportsWStringImpl::SetDataWithLength(PRInt32 aLength, const PR
 
 /***************************************************************************/
 
-NS_IMPL_ISUPPORTS1(nsSupportsPRBoolImpl, nsISupportsPRBool)
+NS_IMPL_THREADSAFE_ISUPPORTS1(nsSupportsPRBoolImpl, nsISupportsPRBool)
 
 nsSupportsPRBoolImpl::nsSupportsPRBoolImpl()
     : mData(PR_FALSE)
@@ -274,6 +274,21 @@ NS_IMETHODIMP nsSupportsPRBoolImpl::ToString(char **_retval)
     return result ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
 }  
 
+NS_COM nsresult
+NS_NewISupportsPRBool (nsISupportsPRBool ** aResult)
+{
+    NS_ENSURE_ARG_POINTER (aResult);
+    nsISupportsPRBool * rval = (nsISupportsPRBool *) (new nsSupportsPRBoolImpl ());
+    
+    if (!rval)
+        return NS_ERROR_OUT_OF_MEMORY;
+
+    NS_ADDREF (rval);
+    *aResult = rval;
+
+    return NS_OK;
+}
+
 /***************************************************************************/
 
 NS_IMPL_ISUPPORTS1(nsSupportsPRUint8Impl, nsISupportsPRUint8)