Release Single IOC

We may want to release a single IOC to an instrument but not release a whole build. this is the procedure to do this.

1. Add all new code to master.
2. Wait for the overnight build.
3. Copy the needed IOC and support module (and anything else) to the releases folder called BUILD_<build number>_<what it is for>.
4. Copy these folders onto the instrument.
5. Run in a epics terminal build_ioc_startups.py
   • If this fails it can be because there is a duplicate IOC the error message is rubbish
6. Restart ibex server.