* prefix internal functions with _foam to prevent collisions
  * cleanup functions after use
  * centralized FOAM_VERBOSE info to etc/{bashrc,cshrc}

 * check for existing processor*/ before creating mesh
 * require processor dirs with -fields option
 * new -force option to remove existing processor*/
 * added usage for Doxygen

remaining bug:
 * -cellDist does not write cellDecomposition labelList when
   region0/ does not already exist

sliced fields.

  * output full file path
  * some preliminary file edits to restore 80-col max.

  * should gzstream move to ThirdParty?

bug fix - previously exited after first command as error flag was used instead of ok flag in main while loop

Adding symmTensor to components.C otherwise foamCalc components sigma does not work in solidDisplacementFoam tutorial