Import ruby-libnotify-0.5.1 as sysutils/ruby-libnotify.

ruby-libnotify is a ruby binding for libnotify (http://www.galago-project.org)
Added sysutils/ruby-libnotify version 0.5.1
+ ruby-libnotify
Update mikutter to 0.2.2.1328.
(drop dependency on libnotify, optional and alternative selectable).

bug fixes.
Updated net/mikutter to 0.2.2.1328
Changes 3.6.18:
* BUG 9777: vfs_dirsort uses non-stackable calls, dirfd(), malloc instead
  of talloc and doesn't cope with directories being modified whilst reading.
* BUG 9678: Windows 8 Roaming profiles fail.
* BUG 9636: Fix parsing linemarkers in preprocessor output.
* BUG 9880: Use of wrong RFC2307 primary group field.
* BUG 9983: Fix output of syslog-facility check.
* BUG 10064: Linux kernel oplock breaks can miss signals.
Updated net/samba to 3.6.18
Correct checking condition of PHP_CHECK_INSTALLED.