Updated: ruby-pkg-config 1.5.1, ruby-raindrops 0.20.1, ruby-sqlite3 1.6.3

[Daisuke Fujimura via Cygwin-announce]

The following packages have been uploaded to the Cygwin distribution:

* ruby-pkg-config 1.5.1-1
* ruby-raindrops 0.20.1-1
* ruby-sqlite3 1.6.3-1