GIT change

All, I have recently blown away the history of the main TDE GIT supermodule (which does NOT contain any files, only submodule references) in order to speed up processing and downloading of that supermodule. The aforementioned history was not useful, consisting primarily of automated updates to the submodule hashes. I have, however, left the 3.5.13-sru branch and associated tags intact as there is no good way to shrink/squash them. Developers, please delete and re-download the top-level GIT supermodule. I have temporarily locked out commit access to that top level supermodule to prevent accidental merges of the old history. All other GIT modules continue to have normal read/write permissions for the TDE development team, so the impact of this should be minimal. One of the most developer-visible benefits of this change is that the TDE commits web page will now update every 6 hours instead of every 12 hours. Tim