add numpy target built by zc.recipe.egg:custom.

component/numpy/buildout.cfg

+[buildout]
+
+extends =
+  ../gcc/buildout.cfg
+  ../libatlas/buildout.cfg
+
+version = versions
+
+[numpy-env]
+PATH = ${gcc-fortran:location}/bin:%(PATH)s
+BLAS = ${libatlas:location}/lib/libcblas.a
+LAPACK = ${libatlas:location}/lib/liblapack.a
+ATLAS = ${libatlas:location}/lib/libatlas.a
+
+[numpy]
+recipe = zc.recipe.egg:custom
+egg = numpy
+environment = numpy-env
+# no need to add libatlas location because they are statically linked.
+rpath =
+  ${gcc-fortran:location}/lib
+  ${gcc-fortran:location}/lib64
+
+[versions]
+# patched version that supports rpath parameter in zc.recipe.egg:custom.
+numpy = 1.8.2nxd001