hdf5: download URL no longer available for 1.8.5, upgrade to 1.8.10
php: Update to 5.3.24

CVE-2013-1635, CVE-2013-1643, CVE-2013-1824.
Merge commit 'refs/top-bases/experimental/overlays' into experimental/overlays

* commit 'refs/top-bases/experimental/overlays':
  php: Update to 5.3.24
  hdf5: download URL no longer available for 1.8.5, upgrade to 1.8.10
Merge branch 'experimental/overlays' into refs/top-bases/experimental/hack-nix

* experimental/overlays:
  php: Update to 5.3.24
  hdf5: download URL no longer available for 1.8.5, upgrade to 1.8.10
Merge commit 'refs/top-bases/experimental/hack-nix' into experimental/hack-nix

* commit 'refs/top-bases/experimental/hack-nix':
  php: Update to 5.3.24
  hdf5: download URL no longer available for 1.8.5, upgrade to 1.8.10