doc: fix glitch in v6+ parameter description
doc typo fix
bugfix: imuxsock: UseSysTimeStamp config parameter did not work correctly

Thanks to Tomas Heinrich for alerting us and provinding a solution
suggestion.
bugfix: segfault on startup when certain script constructs are used

e.g. "if not $msg ..."
Merge branch 'v7-stable' into v7-devel

Conflicts:
	ChangeLog
	plugins/imuxsock/imuxsock.c
testbench: add new test
Merge branch 'v7-stable' into v7-devel