STYLE: use globalPath() instead of path()/".." for parallel

src/OpenFOAM/db/functionObjects/writeFile/writeFile.C

...Matrices/solvers/isoAdvection/isoAdvection/isoAdvection.C

src/functionObjects/field/streamLine/streamLineBase.C

src/functionObjects/graphics/runTimePostProcessing/scene.C

...FunctionObjects/CloudFunctionObject/CloudFunctionObject.C

src/sampling/probes/probes.C

src/sampling/sampledSet/sampledSets/sampledSets.C