ENH: glboal file handling: initial commit

Moved file path handling to regIOobject and made it type specific so
now every object can have its own rules. Examples:
- faceZones are now processor local (and don't search up anymore)
- timeStampMaster is now no longer hardcoded inside IOdictionary
  (e.g. uniformDimensionedFields support it as well)
- the distributedTriSurfaceMesh is properly processor-local; no need
  for fileModificationChecking manipulation.

applications/utilities/miscellaneous/patchSummary/patchSummary.C

@@ -106,7 +106,7 @@ int main(int argc, char *argv[])
                 IOobject::MUST_READ
             );
 
-            if (obj.headerOk())
+            if (obj.typeHeaderOk<volScalarField>(false))
             {
                 addToFieldList(vsf, obj, objI, mesh);
                 addToFieldList(vvf, obj, objI, mesh);