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/postProcessing/velocityField/Mach/Mach.C

@@ -58,7 +58,11 @@ void Foam::calc(const argList& args, const Time& runTime, const fvMesh& mesh)
     );
 
     // Check U and T exists
-    if (Uheader.headerOk() && Theader.headerOk())
+    if
+    (
+        Uheader.typeHeaderOk<volVectorField>(true)
+     && Theader.typeHeaderOk<volScalarField>(true)
+    )
     {
         autoPtr<volScalarField> MachPtr;
 
@@ -71,7 +75,7 @@ void Foam::calc(const argList& args, const Time& runTime, const fvMesh& mesh)
                 basicThermo::dictName,
                 runTime.constant(),
                 mesh
-            ).headerOk()
+            ).typeHeaderOk<IOdictionary>(false)
         )
         {
             // thermophysical Mach

applications/utilities/postProcessing/velocityField/Mach/thermodynamicMach.H

@@ -24,7 +24,11 @@
 
 
         // Check U exists
-        if (Uheader.headerOk() && Theader.headerOk())
+        if
+        (
+            Uheader.typeHeaderOk<volVectorField>(true)
+         && Theader.typeHeaderOk<volScalarField>(true)
+        )
         {
             mesh.readUpdate();
 

applications/utilities/postProcessing/velocityField/Mach/thermophysicalMach.H

@@ -14,7 +14,7 @@
             IOobject::MUST_READ
         );
 
-        if (Uheader.headerOk())
+        if (Uheader.typeHeaderOk<volVectorField>(true))
         {
             volVectorField U(Uheader, mesh);