gnu sed is not relocatable
Merge pull request #360 from jcftang/wip-gnu-sed-not-relocatable

gnu sed is not relocatable
Initial add of libressl 2.0.0 portable

This package is intended to replace or be an alternative to the
openssl package. In general the cross platform build behaviour that
the libressl team has introduced is much cleaner than the openssl
package.
Patch libressl as RAND_egd doesn't exist anymore

See the posts at

* http://python-bugs-list.gmang.org/2014-April/239678.html
* https://blog.hboeck.de/archives/851-LibreSSL-on-Gentoo.html

libressl plan on addressing some of these issues as do python etc...
this patch should be review at the next update of the libressl
upstream package.
Additional cleanup with libressl

- Use gnu-sed for build as OSX's sed is differnt
- Temporarily import some pkgconfig files
- Use patches from https://svn.hboeck.de/libressl-overlay/dev-libs/libressl/
On linux libressl needs -lrt