Merge branch 'baagaard/add-release-2.0.3'

* baagaard/add-release-2.0.3:
  Updated CHANGES to point to Git repo commits.
  Updated to v2.0.3.
Merge branch 'baagaard/update-autoconf'

* baagaard/update-autoconf:
  Fix error in making source distribution.
Merge branch 'baagaard/add-release-2.0.3'

* baagaard/add-release-2.0.3:
  Small fixes to release announcement.
Change DMPlexGet/SetDImension() to DMGet/SetDimension()
Update PETSc version check
Another update for PETSc 3.5.1 in libtests.

DMPlexGetDimension -> DMGetDimension
Merge branch 'knepley/upgrade-petsc-3.5' into maint

* knepley/upgrade-petsc-3.5:
  Another update for PETSc 3.5.1 in libtests.
  Update PETSc version check
  Change DMPlexGet/SetDImension() to DMGet/SetDimension()