Support for Maven, equivalence of building tools

The first request for kilim is support for Maven: https://github.com/kilim/kilim/issues#issue/1

pom.xml is a Maven module for kilim (named kilim:kilim:0.7.2-SNAPSHOT).
It currently compiles identically to the "build.sh" script, as reported
by the "build-equiv.sh" script. The two JUnit test suites that are executed by
test.sh are also executed by Maven.

build-equiv.sh compares the binary results of the three build tools
supported in kilim, right now: Maven, Ant, Shell Script.

In terms of the results of the binary comparison, right now:
Maven == ShellScript != Ant