Standardized the naming of functions which control the writing of fields etc.

to have the prefix 'write' rather than 'output'

So outputTime() -> writeTime()

but 'outputTime()' is still supported for backward-compatibility.

Also removed the redundant secondary-writing functionality from Time
which has been superseded by the 'writeRegisteredObject' functionObject.

applications/utilities/mesh/manipulation/stitchMesh/stitchMesh.C

@@ -476,7 +476,7 @@ int main(int argc, char *argv[])
 
     IOstream::defaultPrecision(max(10u, IOstream::defaultPrecision()));
 
-    // Bypass runTime write (since only writes at outputTime)
+    // Bypass runTime write (since only writes at writeTime)
     if
     (
        !runTime.objectRegistry::writeObject