archive: use util.opener when archiving files.
This simplifies the code a bit and makes it easier to support symlinks.
#!/bin/shhg initecho a > ahg ci -d '0 0' -Amahg an aecho "[ui]" >> $HGRCPATHecho "strict=True" >> $HGRCPATHhg an ahg annotate aecho % should succeed - up is an alias, not an abbreviationhg up