Automatically called for facet merging and Voronoi diagrams

<<QhullVertex does not print facetNeighbors() if !facetNeighborsDefined()
      Was not caught by QhullVertex_test due to facet merging

Fixed type of vertex->neighbors in qh_printvoronoi [no effect on results]

Removed unnecessary if statement in qh_printvoronoi

index.htm: Add Google Scholar references

   Defined Qhull copy constructor and copy assignment [G. Rivet-Sabourin]
   Disabled UsingQhullLib default constructor, copy construct, and copy assign

- Add #error to Qhull.h if qh_QHpointer is not defined
- Define MSG_QHULL_ERROR in user.h
- Move MSG_FIXUP to 11000 and updated FIXUP QH11...

Fixed type of tempstack and old_qhstat [amorilia]
Changed tabs to spaces

Added project files for qhull programs
Changed qh_gethash to return an int
Changed qh_addhash to take an int

Updated citeseer references to  citeseerx doi =10.1.1.117.405
Changed copyright to C.B. Barber
Updated Register.txt to Qhull

Organized src/Changes.txt
Updated copyright dates
Fixed warnings from Kent William
Reviewing FIXUP
Add qhull-all.pro to build projects in order
Passed 127 tests.

Breaking change
  Renamed qhulllib to libqhull to match libqhull.a
  Keep rboxlib as is.  librbox does not scan and rbox is not a lib

Includes QTest files for each class and user-eg3.c for demonstrating the interface.
See src/Changes.txt for change notes and to do.
See FIXUP for problems
See WARN64 for 64-bit problems