Stéphane Peter's makeself.sh script (http://megastep.org/makeself/) is
used to produce the installers/posix/oolite-<version>.x86[_64].run
self-extractible package.
Packager targets added:
* pkg-posix - builds a release self-extracting package
* pkg-posix-test - builds a test release self-extracting package
* pkg-posix-snapshot - builds a snapshot release self-extracting package
git-svn-id: http://svn.berlios.de/svnroot/repos/oolite-linux/trunk@4492 127b21dd-08f5-0310-b4b7-95ae10353056
