Switched all Guardian medm calls on the main Guardian screen, the IFO align screen and the ALS screen to a standard medm display call. This fixes the long-standing issue of Guardian not popping up.

For this I made modified copies of two guardian screens:
sys/common/medm/SYS_CUST_GUARD.adl  (a copy of the GUARD.adl screen in the guardian distribution"
sys/common/medm/SYS_CUST_GUARD_OVERVIEW.adl  (a copy of the GUARD_OVERVIEW.adl)

These screens now point directly to the medm screen, instead of calling guardmedm.

I also updated the IFO_ALIGN.adl screen and the ALS_CUST_MAIN.adl screen.