GALIL: allow `COM` in `GALILADDR` macro

[FreddieAkeroyd]

As a user i would like to be able to type COM4 38400 as well as 192.168.1.1 into the GALILADDR macro

Acceptance Criteria

• typing above does not display pattern mismatch error

How to Test

• need to run make iocstartups after swapping branch and then restart server

[rerpha]

Looks good - could you patch onto galil-old of ioc\master please, I guess we'll need this there as well