run tests through valgrind
fix another missibility typo

this one was not fixed in @bska's PR because my branch for ROCKTAB was
not merged back then. /me is confused by too many things going on at
once...
[PATCH] [cmake] Makes arbitrary build subdirectories possible.

Instead of guessing the suffix or subdir of the build directory,
we now simply compare PROJECT_{BINARY,SOURCE]_DIR to detect it.
By this e.g. opm-core/opm-parallel is a possible build directory, too.
Merge remote-tracking branch 'akva2/run_tests_through_valgrind' into valgrind
Changed order of variables in comparison: avoid warning of uninitialised data.
Changed order of elements in comparison: To avoid unitialized variable warning.
Added explicit delete in keyword test code.
Made unit system a shared_ptr to avoid memleak in test.
Merge pull request #114 from joakim-hove/valgrind

Valgrind
add keywords used by the opm-core endpoint scaling code

plus some wrappers/tables
remove the "MATRIX_COMPRESSIBILITY" from ROCK

This field is specific to the Eclipse 300 geomechanics module. IMHO,
either all fields for the eclipse 300 geomechanics module should be
added or none. Adapting the table code to "partially defined" keywords
is a pain I'd rather avoid!
Merge pull request #116 from andlaus/remove_r300_column_in_rock

remove the "MATRIX_COMPRESSIBILITY" from ROCK
Merge pull request #115 from andlaus/add_endpoint_scaling_stuff

add keywords used by the opm-core endpoint scaling code
Merge pull request #112 from andlaus/another_typo

fix another missibility typo
Merge pull request #113 from blattms/make-arbitrary-sibling-possible

[PATCH] [cmake] Makes arbitrary build subdirectories possible.
Added const to a couple of get-type methods
Merge pull request #120 from flikka/constify-Group-methods

Added const to a couple of get-type methods
units: substitute "FlowVolume" by "LiquidVolume" and "GasVolume"

because the units for them are different in the "Field" unit system.
units: replace "t" with "Time"

this makes things more explicit and more readable
units: Replace "L" by "Length"