Added support for additional commandline options via environment variable SBUILD_OPTS.


git-svn-id: http://sbuild.tototec.de/svn/sbuild/trunk@401 024a02f7-42f7-40fc-9f58-65666d1f2450
Added new command line options --just-clean and --just-clean-rekursive to delete all .sbuild state directories (recursive) without checking and reading any SBuild build file.


git-svn-id: http://sbuild.tototec.de/svn/sbuild/trunk@402 024a02f7-42f7-40fc-9f58-65666d1f2450