Details about pushing trackDb to the RR

When we are pushing tracks and trackDb, we need to be aware that others might be working on tracks in the same assembly.

When you're working on single tracks, please:

1. announce to the group when you've made strict, so others can sqawk if it will affect them.

2. check the pushQ for others working in the same assembly, so you be aware that you might have a moving target.

3. check trackDbGlobal output before releasing the track to see if the nightly script picked up any diff that would go with it.

To be =really= safe, you could run

  compareTrackDbAll.csh $db

after making strict. It's a little slow, but it'll show you what you've got.