Deleted reference to RELEASE_NOTES in Makefile.am; this has been replaced by a markdown-formatted version, RELEASE_NOTES.md.
Modified Makefile.am to not remove ctest.c, ctest64.c.  This may be reverted by for now leaving ctest.c, ctest64.c in source repository.
Merge branch 'ward-dev'

* ward-dev:
  Changed label from 'Older documentation' to 'other documentation', to remove explicit reference to netcdf 4.1.3, as per discussion with Russ.
  Updated .gitignore file.
Modified windows-binaries.md document to point at binary downloads for netCDF-C 4.3.1-rc1.
Updated RELEASE_NOTES.md with information about nc_rename_grp (NCF-204).
Added information to RELEASE_NOTES to reflect the 'release candidate' status of the current release.
Added information about needing to generate configure scripts with 'autoreconf'.
Updated Building with CMake documentation, moved 4.3.0 errata to a place of less prominence.