The 3.7 branch is now 3.7.1-alpha


git-svn-id: https://develop.svn.wordpress.org/branches/3.7@25914 602fd350-edb4-49c9-b593-d223f7449a82
Avoid a notice for an undefined $checksums variable when updating from pre-3.7 to post-3.7.

Merges [25915] to the 3.7 branch.

props GaryJ.
fixes #25689.


git-svn-id: https://develop.svn.wordpress.org/branches/3.7@25916 602fd350-edb4-49c9-b593-d223f7449a82