Merge pull request #511 from boegel/disable_optarch

fix disabling of optarch toolchain option
purge before loading module for running test cases + some code refactoring
fix remarks
Merge pull request #510 from boegel/authors

fix module docstring with authors, update copyright line (2013)
Merge pull request #512 from boegel/purge_before_test_cases

purge before loading module for running test cases + some code refactoring
clean up log files for --job and --regtest
Merge pull request #513 from boegel/cleanup_logs

clean up log files for --job and --regtest
bump version to 1.2.0rc1
update release notes for v1.2.0
Merge pull request #514 from boegel/develop

version bump to v1.2.0rc1 + updated release notes
minor tweak to release notes
Merge branch 'develop' into moar_options_unit_testing
add unit tests for --avail-easyconfig-params and --list-easyblocks command line options
fix empty files
replace spaces by \s+ in regex patterns
Merge pull request #515 from boegel/moar_options_unit_testing

add unit tests for --avail-easyconfig-params and --list-easyblocks command line options
fix broken unit tests by fiddling with sys.path instead of PYTHONPATH to test cmdline options that require a set of easyblocks
only set LIBFFT when Intel MKL FFTW interface libraries are present
take into account that FFT_LIB_DIR is a list of dirs
fix typo