added 8-byte support for re2 input, it will now be the default for genbox,reatore2, and n2to3. Nek is backwards compatible with the 4-byte re2, of course.  Also added a gen_re2 subroutine to postpro.f

git-svn-id: https://svn.mcs.anl.gov/repos/nek5/trunk/nek@972 24248562-e74d-0410-ab4b-d4d80c744c73
commented curve debugging and update HEADER

git-svn-id: https://svn.mcs.anl.gov/repos/nek5/trunk/nek@974 24248562-e74d-0410-ab4b-d4d80c744c73
added x avereger and auto_average for files to navier5.f, pff

git-svn-id: https://svn.mcs.anl.gov/repos/nek5/trunk/nek@975 24248562-e74d-0410-ab4b-d4d80c744c73
added x avereger and auto_average for files to navier5.f, pff

git-svn-id: https://svn.mcs.anl.gov/repos/nek5/trunk/nek@976 24248562-e74d-0410-ab4b-d4d80c744c73
updated header after navier5.f updates, pff

git-svn-id: https://svn.mcs.anl.gov/repos/nek5/trunk/nek@977 24248562-e74d-0410-ab4b-d4d80c744c73