mq: add qdelete --forget option
This removes an applied patch from the series and status files without
popping it. It is useful when an mq patch has been applied upstream.
#!/bin/shmkdir acd ahg initecho foo > bhg add bhg ci -m "b" -d "1000000 0"chmod -w .hgcd ..hg clone a bchmod +w a/.hg # let test clean upcd bhg verify