Major packaging change to work around parallel calls - stopped zipping targets from having direct dependency on 'sf-preprocess-package-config', and instead have 'sf-zip-content' call 'sf-preprocess-package-config' if needed. Changed 'sf-prep' to call a target that wipes out the 'generated' directory. It's not perfect but it gets us going again.

#!perl -w
use strict;
# Sorts the input, removes duplicates, and outputs it

# Read it
my @content = <>;

# Sort it, and grep to remove duplicates
my $previous = "\n\n";
@content = grep {$_ ne $previous && ($previous = $_, 1) } sort @content;

# Write it
print @content;