making copyrights consistent for all code in the repository

  fix to configure.ac when using Nvidia's OpenCL installation

  porting changes from staging to trunk

  update INSTALL instructions to fix SML/NJ version

  switch LIBS_CL to CL_LIBS

  Added nrrd directory from stage.

  Merged in changes from stage.  These include using the new "unu dnorm" command,
  support for the DIDEROT_TEEM_DIR variable, better installalation support, and
  adding the manpage docs to the tree.

  Merging in bug fixes and language enhancements from the vis12 branch (via staging).
  Features include type promotion, the curl and colon operator, transpose, and functions.

  Added --enable-32-bit configure option

  Add check for OpenCL in NVIDIA's cuda tree.

  break out of cl.h check loop

  porting updates from vis12 branch into trunk

  more configure tweaking

  Better OpenCL configuration support

  restore building of regression test scripts

  Merging changes from pure-cfg branch back into trunk

  Merging in changes from pure-cfg branch.

  Removed manticore reference

  merging changes from pure-cfg

  Restore code to generate regression-test scripts

  Added support for hest-based command-line arguments to trunk.  Also switched
  output filename to prog.txt (from mip.txt)

  Add build support for teem example

  Porting many changes from the pure-cfg branch, including value numbering
  and support for parallel execution on SMP systems.

  Added script to run a single regression test

  Scripting support for regression tests

  more merging of pure-cfg changes back into trunk

  Add project URL

  Added top-level Makefile

  Added test/probe/Makefile

  Add Makefile.in to test/MIP

  Reorganize stuff to do with images, kernels, and fields into its own directory.

  Merge image-info into IL directory

  Fixed syntax error

  Remove unused variables

  Adding configuration support

  Initial commits