CET Developer 2515.0 Release

We have put out an off-schedule release and pre-release of CET Developer to address a regression issue with the previous releases.

The only change was to how the 'cop make` command worked when given no arguments. In the past, if given no arguments, the command would grab all reachable extensions from the current directory and sub-directories. This was an easy way to have 'cop' build all reachable extensions, without the need to identify each individually.

The previous releases of CET Developer broke this functionality; running 'cop make' with no arguments would build nothing. This release returns the behavior to how it worked before.