STYLE: find(), cfind() methods instead of lookupPtr()

applications/test/Dictionary/Test-Dictionary.C

applications/test/PtrListDictionary/Test-PtrListDictionary.C

...utilities/surface/surfaceMeshConvert/surfaceMeshConvert.C

...s/utilities/surface/surfaceMeshExport/surfaceMeshExport.C

...s/utilities/surface/surfaceMeshImport/surfaceMeshImport.C

...M/containers/Dictionaries/DictionaryBase/DictionaryBase.C

...M/containers/Dictionaries/DictionaryBase/DictionaryBase.H

src/OpenFOAM/db/Time/TimeIO.C

src/OpenFOAM/global/debug/debug.C

src/OpenFOAM/global/debug/simpleObjectRegistry.C

src/meshTools/coordinate/systems/coordinateSystems.C

src/meshTools/coordinate/systems/coordinateSystems.H

src/meshTools/coordinate/systems/indirectCS.C