Use a non-beta name for the first 1.6 release.
Use a non-beta name for the first 1.6 release.

This change should not be merged to master (or should be merged, then
reverted).

jpodeszwik/mifos,AArhin/head,maduhu/head,vorburger/mifos-head,jpodeszwik/mifos,vorburger/mifos-head,maduhu/mifos-head,maduhu/mifos-head,maduhu/head,jpodeszwik/mifos,maduhu/head,maduhu/head,AArhin/head,maduhu/mifos-head,vorburger/mifos-head,AArhin/head,maduhu/head,AArhin/head,maduhu/mifos-head,jpodeszwik/mifos,vorburger/mifos-head,AArhin/head,maduhu/mifos-head