New bash 3.1-1 from unstable causes remaster script to fail

[firnsy]

I haven't downloaded bash 3.1 but I always use "[]" brackets for my arithmetic.

Modify the line

REMASTER_PERC=($REMASTER_PROGRESS*100)/$REMASTER_NEEDED_SIZE

to read (functionally identical)

REMASTER_PERC=$[$REMASTER_PROGRESS*100/$REMASTER_NEEDED_SIZE]

and let me know if it helps.