smurf: Call astNorm on coords printed by tileinfo
smurf: Also use astNorm values in tileinfo output

The output parameters RACEN and DECCEN of TILEINFO now
use the values to which astNorm has been applied,
as for display to the screen.
smurf: Update tileinfo display for 0-based tiles

This updates the printed output of tileinfo to label tiles
as "Tile x (from 0 to 49151)" instead of "Tile x (of 49152)"
to avoid confusion due to 49152 not being a SCUBA-2 tile.