[alma-config] CONFI is modified to read the ascii format of BRYAN's mask

[Leonia Kogan]

John,

As you know CONFI (AIPS task) can read the topography information as 
an input file written in ASCII.
The original file prepared by Bryan was in fits format.
Recentely he created the files in ASCII format also.

These files are much bigger than the Holdaway's file I have used early.
So I modifyed CONFI to read the Bryan's ASCII files.

I have changed some defaults of CONFI in accordance of last development 
of ALMA.

I added the new parameters BLC, TRC to allow using a portion of the mask 
for smaller configuration.

The new version of CONFI is in the AIPS system now.

Be ready to see that CONFI works rather slow with the huge file.

Leonia