Add subversion and mercurial to hermetic "Devel" configurtion to make them available for buildbot scripts.
Add subversion and mercurial to hermetic "Devel" configurtion to
make them available for buildbot scripts.

Review URL: http://codereview.chromium.org/1836001

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@2187 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,sbc100/native_client