Updated release to 0.6.3-SNAPSHOT for development.
Initial implementation of the jgcs wrapper for Corosync/CPG.

Two main caveats:

 1. The standard API is still missing. This provides only a thin JNI wrapper
 for libcpg.

 2. Currently (as of Corosync 2.3), cpg_dispatch() uses a lot of stack space
 and crashes the JVM. See the README for a workaround.