- exception calcType.H since it'll most likely be used for building
  applications anyhow

- use quailified names in more of the lagrangian code

- killed some tab indents in various places.

which need this functionality.  Solvers will now check the correctness of the BCs on
read.

This reverts commit ff5137e4.
But keeps (cosmetic) changes to bin/foamCleanPath

- this was not agreed.

This reverts commit 41b196ff.

- old-style (left untouched for now):
  app, lib, run, sol, tut, util

- new-style:
  foamApps, foamLib, foamRun, foamSol, foamTut, foamUtils

- additional aliases:
  userApps, whichFoam

NB: ideally we'd have 'foamSrc' instead of 'src'.
    Do we really need 'foamsrc' and 'foamfv' anyhow?

- compile into linux64Gcc44, linuxGcc44 to avoid clashes during testing
- continue to use gmp-4.2.4 since gmp-4.3.x might be miscompiled with
  a system gcc-4.3.2

- useful location for sharing in-house solvers, libraries, etc
  for use at the entire site

- similar naming convention as ~OpenFOAM expansion:

  FOAM_SITE_APPBIN=
  $WM_PROJECT_INST_DIR/site/$WM_PROJECT_VERSION/bin/$WM_OPTIONS

  FOAM_SITE_LIBBIN=
  $WM_PROJECT_INST_DIR/site/$WM_PROJECT_VERSION/lib/$WM_OPTIONS