Launchpad doc tweaks

- Fix other jbigi/jcpuid build script errors and typos
- Nonzero exit code missing on some jbigi/jcpuid build script failures
- Refresh patch

Don't bundle launch4j licenses in non-windows builds
Clarify in LICENSES.txt that launch4j is not bundled in non-windows builds and packages
Debian:
Change maintainer
Remove Debian patch that drops the launch4j licenses

Add missing patch with update for .25
Add missing line to require wrapper
Add launchpad help document
Add .24 and .25 releases to changelog

Cherry-picked out of
https://launchpad.net/~i2p.packages/+archive/ubuntu/i2p/+files/i2p_0.9.24-1ubuntu1.debian.tar.xz
The files in http://deb.i2p2.no/pool/main/i/i2p/i2p_0.9.24-1~deb8u+1.debian.tar.xz
are somewhat different.
Note that some files out of that tarball are apparently older than what is in our debian/
directory and were not copied over.
Some of the changes may be for Ubuntu and will not work for Debian.
Kytv may have had a local debian/ directory for Ubuntu builds that was not checked in anywhere.
Untested. Another patch refresh for 0.9.25 may be required.
To be fixed up after the 0.9.25 release.

- This came from the script from Tanuki but it does return useful information
  (as far as its use in the script) in my testing. uname -m is better for our
  needs. (The problem is only seen on certain CPUs when *all* available wrapper
  binaries are present and the script tries to resolve the correct binary to use..

sk, ja, de, fr, it zh, nl, uk, nb

           - remove tanuki's script version checks

-28

- Windows: Self-compiled with VS2010 in Windows 7. The icon has been
  changed from Tanuki's default to Itoopie.
- Linux ARMv6: Compiled on a RaspberryPi using gcc 4.6.3-14+rpi1,
  Icedtea6 6b27-1.12.5-1+rpi1 and stripped
- All other binaries are from the "community edition" deltapack offered by
  Tanuki.

- check status of i2psvc with ldd
- only warn about libiconv in FreeBSD if the package isn't installed. In recent
  versions of FreeBSD, OpenJDK depends on libiconv so it should always be
  available.