3.7.5 version bumps.


git-svn-id: https://develop.svn.wordpress.org/branches/3.7@30472 602fd350-edb4-49c9-b593-d223f7449a82
package.json bump.


git-svn-id: https://develop.svn.wordpress.org/branches/3.7@30478 602fd350-edb4-49c9-b593-d223f7449a82