Before I break more tests, I'm going to move the stuff I just committed from MueLu::TpetraOperator to MueLu::ShiftedLaplacianOperator.

Build/Test Cases Summary
Enabled Packages: MueLu
0) MPI_DEBUG => Skipped configure, build, test due to no enabled packages! => Does not affect push readiness! (-1.00 min)
1) SERIAL_RELEASE => Skipped configure, build, test due to no enabled packages! => Does not affect push readiness! (-1.00 min)
2) MPI_DEBUG_SS => passed: passed=26,notpassed=0 (45.34 min)
MueLu: always do fill complete with "OptimizeStorage" enabled.
Otherwise the MM routines will fail
MueLu: fix Navier2D_epetra nightly test
Ifpack: enabling LaTeX rendering with MathJax

Forgot to set doxygen option to use MathJax in previous commit.
This makes reading the documentation easier because all equations are rendered nicely and scale with the zoom factor.
Fixing a problem with quoting and help printout.
Adding an install script for CMake building from source

It turns out that some systems can't use the download-cmake.py script (they
don't allow general internet access from the commandline).  Also, we have seen
some problems with "close" binaries installed on other systems when copied
over.  On one such system, we installed CMake from source and it worked
prefectly.