Allow reuse of nodeset and sideset numbers.
The nodesets and sidesets will be the sum of the specified topological entries specified by one or more
sideset/block sideset, or nodeset/block nodeset specifications.
[Ifpack] Trailing whitespace
[Ifpack] Improve null check

Build/Test Cases Summary
Enabled Packages: Ifpack
Enabled all Forward Packages
0) MPI_DEBUG => passed: passed=529,notpassed=0 (28.55 min)
1) SERIAL_RELEASE => passed: passed=497,notpassed=0 (11.07 min)
Other local commits for this build/test group: 45e57ed
Adding a test for multiple sideset and nodeset specification entries.
Accumulates nodes or element faces into sideset or nodeset of specified id.
Fix for coloring tests:  copy the input file for the test
Merge branch 'master' of software.sandia.gov:/git/Trilinos
Tpetra: Modifying CrsMatrix to expose xferAndFillComplete class members.
Tpetra: Modifying AT*B MMM to use upgraded exportAndFillComplete.

Pary on Dr. Ballard.

Build/Test Cases Summary
Enabled Packages: Tpetra
0) MPI_DEBUG => passed: passed=71,notpassed=0 (14.25 min)
1) SERIAL_RELEASE => passed: passed=52,notpassed=0 (4.29 min)
Other local commits for this build/test group: 76dde43
Zoltan2: Add more coloring tests.
Zoltan2: Add new test bcsstk30 which is denser and requires more colors.
Disable it for now as it seems we can't read pattern-only files?
MueLu: updating arcadia

Adding capability of passing in timelines/labels/parsing function for Epetra and Tpetra.
Adding module to grock MueLu's RAP times (RAP total, A*P, and R*AP).
Example usage:

   ./arcadia.py -l MueLuRAPtimelines -a -o screen_1 --petra=epetra

(This assumes that the results are in run_*/screen_1.epetra.)
MueLu: arcadia: adding total to ML RAP timelines
Isorropia: Bug fix in example. Set parameter to use edge weights.