Merge branch 'dict-lookup' into 'develop'

applications/test/dictionary/testSubkeyword

...ing/graphics/PVReaders/PVFoamReader/vtkPVFoam/vtkPVFoam.C

...Readers/PVblockMeshReader/vtkPVblockMesh/vtkPVblockMesh.C

src/OpenFOAM/db/dictionary/dictionary.C

src/OpenFOAM/db/dictionary/dictionary.H

src/OpenFOAM/db/dictionary/dictionaryIO.C

src/OpenFOAM/db/dictionary/entry/entryIO.C

...ictionary/functionEntries/inputModeEntry/inputModeEntry.C

...ictionary/functionEntries/inputModeEntry/inputModeEntry.H

...M/db/dictionary/functionEntries/removeEntry/removeEntry.H

src/OpenFOAM/db/dictionary/primitiveEntry/primitiveEntryIO.C

src/OpenFOAM/global/argList/argList.C

src/OpenFOAM/global/argList/argList.H