component/patchelf: new component

extracted from !735

component/patchelf/buildout.cfg

+[buildout]
+extends =
+  ../autoconf/buildout.cfg
+  ../automake/buildout.cfg
+  ../pkgconfig/buildout.cfg
+
+parts = 
+  patchelf
+
+[patchelf]
+recipe = slapos.recipe.cmmi
+shared = true
+url = https://github.com/NixOS/patchelf/archive/0.10.tar.gz 
+md5sum = b435199e3e03d1b61dd0f9031ce8c9c2
+pre-configure = 
+  autoreconf -vif
+environment =
+  PATH=${pkgconfig:location}/bin:${autoconf:location}/bin:${automake:location}/bin:%(PATH)s