common/logger.scm: Remove
common/Makefile.am (pkgdata_DATA): Specify the modules explicitly.

* common/Makefile.am (pkgdata_DATA): Use explicitly written list
  of modules.
lazycatd.scm: Fix names of global immutable variables.

* lazycat-daemon/lazycatd.scm (*syslog-tag*): Remove.
  (*object-types*): Rename to `%object-types'.
  (*options*): Rename to `%options'.
  (*default-ping-interval*): Rename to `%default-ping-interval'.