PyPy 5.1 binary for linux x86 is built for Ubuntu 12.04 - 14.04

plugins/python-build/share/python-build/pypy-5.1

@@ -1,6 +1,6 @@
 case "$(pypy_architecture 2>/dev/null || true)" in
 "linux" )
-  if require_distro "Ubuntu 10.04" 1>/dev/null 2>&1; then
+  if require_distro "Ubuntu 12.04" "Ubuntu 12.10" "Ubuntu 13.04" "Ubuntu 13.10" "Ubuntu 14.04" 1>/dev/null 2>&1; then
     install_package "pypy-5.1.0-linux" "https://bitbucket.org/pypy/pypy/downloads/pypy-5.1.0-linux.tar.bz2#2f6c521b5b3c1082eab58be78655aa01ec400d19baeec93c455864a7483b8744" "pypy" verify_py27 ensurepip
   else
     install_package "pypy-5.1-linux_i686-portable" "https://bitbucket.org/squeaky/portable-pypy/downloads/pypy-5.1-linux_i686-portable.tar.bz2#893507603a58b8983b69924e60591de39b8f71f70ba36d6e3894db8f7c49c3ea" "pypy" verify_py27 ensurepip