ENH: generalize rule for X11

ENH: Avoid move in flex/flex++ rule.

- more consistent script names
- remove '-help' option from internal scripts

COMP: latest coco-cpp can find the frame files relative to the
executable path. This simplifies the make rules.

present.

- specifies headers that should be ignored. Provides a workaround
  for the fact that wmkdep/wmkdepend doesn't handle defines at all.

STYLE: code cleanup of wmkdep.l

old: $WM_THIRD_PARTY_DIR/<packageName>/platforms/$WM_ARCH*
new: $WM_THIRD_PARTY_DIR/platforms/$WM_ARCH*/<packageName>

This streamlines the creation of binary packs, eases distribution and
helps when testing the robustness of relocatable installations.

This signals that we are using the system installed openmpi version.

- This avoids dependency on lex/flex and provides better encapsulation
  for buffer switching. As a result, the maximum number of open files
  only corresponds to the include depth.

- handles basic operations, references to other dictionary entries
  (with '$name' syntax) and assorted mathematical functions:

      pi(), degToRad, radToDeg, asin, acos, atan, sin, cos, tan, log,
      log10, mag, atan2, pow

The basic syntax: #calc{ ... };

NOTE the trailing ';' is required for the primitiveEntry to be
properly defined.

Include character class (wchar_t or char) as a template parameter in
CocoParserErrors.

- solves problems that can occur when checking $PWD and links are involved

- simplified the logic
- provide direct link to the respective scripts
- provide help from the respective scripts

- 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

- search for 'lnInclude' rather than 'Make' by default
  This gives better general behaviour for rebuilding.

- update foamPack* scripts accordingly

- skip including java rather than having recursive includes
  (and too many files open error) when WM_JAVAC_OPTION isn't defined.