- fixed MED node ordering
- polished 64 bit Cocoa Mac OS X FLTK version
- updated copyright

re-committing work from last two days after server crash:

- refactored old Geo code (new/delete)
- moved DrawPlugin to Plugin
- move from matheval to mathex
- move from Flu_Tree_Browser to Fl_Tree
- fixed crash in Triangulate plugin

- fix bb computation to avoid model jumping around when adding points in z=0 plane
- pass interpol matrices as ref

- removed every "throw;", i.e., every throw that did not throw an actual exception.
  throw wihout args should ONLY be used in a catch{} to re-throw the same exception
  (for it to be handled in another catch clause)

- introduced GmshMessage callback class so that clients can easily implement
  their own message handling (see example in driverOCC.cpp)

untabify

- clean up GModel API (xxByTag -> getXx, numXx -> getNumXxes, ...)

cleaned last gcc warnings

tagging gmsh_2_0_0

enhancement of gmsh Surfaces

JFR

 more work to get universal libs and binaries on os x: use libtool
instead of ar