Log Message:
Updated to latest release, 6.0.7. net/ccrtp builds with this version, too.
From ChangeLog:

from ucommon 6.0.6 to 6.0.7
- error state in fsys open fixed
- fsys error reset inline added

from ucommon 6.0.5 to 6.0.6
- small cleanup of useless validator assignments
- fix gnutls casting and warnings
- modernized automake support