Revert "Makefile.am: bump library version to 2:1:1"
Revert "Makefile.am: bump library version to 2:1:1"

This reverts commit bdedbc0b2bd645aff4564b96bca8d352e552e711.

hstern/nmsg,hstern/nmsg,hstern/nmsg,hstern/nmsg,hstern/nmsg