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/preProcessing/setFields/setFields.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2013 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2014 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -64,7 +64,7 @@ bool setCellFieldType
     );
 
     // Check the "constant" directory
-    if (!fieldHeader.headerOk())
+    if (!fieldHeader.typeHeaderOk<fieldType>(true))
     {
         fieldHeader = IOobject
         (
@@ -76,7 +76,7 @@ bool setCellFieldType
     }
 
     // Check field exists
-    if (fieldHeader.headerOk())
+    if (fieldHeader.typeHeaderOk<fieldType>(true))
     {
         Info<< "    Setting internal values of "
             << fieldHeader.headerClassName()
@@ -216,7 +216,7 @@ bool setFaceFieldType
     );
 
     // Check the "constant" directory
-    if (!fieldHeader.headerOk())
+    if (!fieldHeader.typeHeaderOk<fieldType>(true))
     {
         fieldHeader = IOobject
         (
@@ -228,7 +228,7 @@ bool setFaceFieldType
     }
 
     // Check field exists
-    if (fieldHeader.headerOk())
+    if (fieldHeader.typeHeaderOk<fieldType>(true))
     {
         Info<< "    Setting patchField values of "
             << fieldHeader.headerClassName()