LTPFS module bug fixes.

Rename duplicate test41c into test41d.
Add test42b to the lists of tests to be executed.
Indentation in  modules/ltpfs.inc
Merge remote-tracking branch 'origin/next' into next

Conflicts:
	modules/ltpfs.inc
New layering/step1: remove run_test.sh
CONF: we now have one configuration file per module. File sigmund.conf is the main configuration file.
One single script to be run. No more core_test.sh or run_test.sh
Missing export -f
build_test.sh know correctly uses new configuration file schema
better management of confdir. Default is now /etc/sigmund.d/
Support of PRE_TEST[] and POST_TEST[] functions.
Added test tags for different classes of users.

  - prod    Fast and safe tests
  - admin   Medium to slow tests
  - dev     In-depth and risky testing.
Merge remote-tracking branch 'ocre/henri' into next

Conflicts:
	modules/allfs.inc
Making display more quiet as tests are skipped because of "-t" option if "-q" option is used