Add untested `splitter` pkgbuild.
`splitter` PKGBUILD now installs dependencies.

splitter.jar requires several dependencies to work. They are found in the lib/
subdirectory of the source tarball, and the splitter PKGBUILD now installs
those dependencies. As a result, splitter correctly responds to `splitter
--version` instead of crashing.
Add existing mkgmap PKGBUILD.
Update mkgmap PKGBUILD to r2544 and install lib/
Merge branch 'splitter' into mkgmap

The splitter PKGBUILD is very similar to the mkgmap PKGBUILD, so they should be
updated in conjunction.
Make splitter and mkgmap PKGBUILDs match.

README.md: tweak wording.
mkgmap/PKGBUILD: mirror splitter pkgbuild
ruby-cri/PKGBUILD: change email address format
ruby-nanoc/PKGBUILD: change email address format
splitter/PKGBUILD: reformat a couple lines
Install lib/ with `install` instead of `cp`.

The `install` utility is capable of setting permissions when a file is
installed. If the lib/ directory is simply copied to the destination directory,
permissions could be anything.
Fix namcap error message.

Both mkgmap and splitter use shell scripts to launch the actual java programs.
Thus, `sh` needs to be included as a dependency.
Shut up namcap.

namcap warnings fixed:
E: Dependency java-environment detected and not included
W: Dependency included and not needed ('java-runtime')