MueLu: hands-on.py: fix bug in hands-on script

Only examples with user-chosen mesh were affected.
MueLu: hands-on: fix plotting with gnuplot

I tested it on several machines. The ordering of the gnuplot input seems
to be important for the "pm3d" mode.
more ifdef'd out code to do multiple step block Jacobi
EXODUS: Fix some memory access errors

(From Sierra)
Revert "EXODUS: Fix some memory access errors"

This reverts commit aae7a9bd54634262580128365ce1c844308fd0b3.

(From Sierra)
EXODUS: Fix some memory access errors

(From Sierra)
SEACAS: Coverity fixes

(From Sierra)
STK_IO: Change EXPECT_THROW to EXPECT_ANY_THROW since dont care what type of exception is thrown, only that an exception is thrown

(From Sierra)
SEACAS: exodiff -- do not access null object in error message about finding null object

(From Sierra)
STK: Change EXPECT_THROW to EXPECT_ANY_THROW since do not care about type of exception; only that there was one

(From Sierra)
SEACAS: aprepro - close file prior to function return; not after function return

(From Sierra)
SEACAS: chaco - add missing include files

(From Sierra)
Add MetaData getter for topology 'root part' that takes a stk::topology instead of shards topology.

(From Sierra)
Add "key-hole mesh" unit-test.

(From Sierra)
Add create_edges tests with key-hole mesh.

(From Sierra)
stk_performance_tests:  Fix performance reporting for redsky heavy test.

(From Sierra)
stk_mesh:  Remove disabled unit tests for disabled capability.

(From Sierra)
Unit tests of modification end capability.

(From Sierra)
STK: Use 64-bit location in MPI::Loc

*Modified datatypes for MPI::Loc to use 64-bit integer for index.

*Created new MPI Op to reductions.

*Modified existing code in framework, utility and conchas2 that depended
on this.

*Added 2 unit tests.

(From Sierra)
STK: Disable test in stk mesh due to circular dependency with stk io

(From Sierra)

Build/Test Cases Summary
Enabled Packages: SEACASAprepro, SEACASExodiff, SEACASNemspread, SEACASChaco, SEACASExodus, SEACASSVDI, STKIO, STKMesh, STK, STKUtil
Disabled Packages: PyTrilinos,SEACASExo2mat,SEACASMat2exo,Optika,STKClassic
Enabled all Forward Packages
0) MPI_DEBUG => passed: skipped configure, build, test due to no enabled packages (0.01 min)
1) SERIAL_RELEASE => passed: skipped configure, build, test due to no enabled packages (0.01 min)
2) MPI_DEBUG_SS => passed: passed=161,notpassed=0 (52.74 min)
3) SERIAL_RELEASE_SS => FAILED: passed=111,notpassed=1 => Not ready to push! (26.59 min)
Other local commits for this build/test group: 645b269, 478f732, 6c9f976, ea7f296, cca9e63, ccc1b6e, 0ac76af, d3c140a, 05839d9, a0c4834, ca13438, cb1f300, 8b162a9, ea6fbd5, c441995, ab9123f
WARNING: Forced the push!