[ANN] kgio 2.4.2 - OpenSolaris build fix

kgio provides non-blocking I/O methods for Ruby without raising
exceptions on EAGAIN and EINPROGRESS. It is intended for use with the
Unicorn and Rainbows! Rack servers, but may be used by other
applications.

* http://bogomips.org/kgio/
* kgio@librelist.org
* git://bogomips.org/kgio.git

Changes:

* adds -lnsl and -lsocket checks for OpenSolaris

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--
Eric Wong