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which has been superseded by the 'writeRegisteredObject' functionObject.

src/postProcessing/functionObjects/field/streamLine/controlDict

@@ -54,7 +54,7 @@ functions
         functionObjectLibs ("libfieldFunctionObjects.so");
 
         // Output every
-        writeControl   outputTime;
+        writeControl   writeTime;
         // writeInterval 10;
 
         setFormat       vtk; //gnuplot, raw etc. See sampleDict.