Meta/Make: prepend the canned settings to $O

Otherwise "O=<some custom settings> Meta/Make" will not be able to
override them.
Meta/cook: notice 'I think this is ready'
Meta/RelBuild: use gpg agent

With kup, the maintainer needs to sign multiple files.  Start gpg
agent and use it for a short while.
What's cooking (2013/08 #05)
Meta/RelBuild: kill GPG agent only if it is still running
Meta/RelBuild: use -Wno-format-zero-length while cutting a release
Meta/RelUpload: use kup from nearby
What's cooking (2013/08 #06)
What's cooking (2013/08 #07)
What's cooking (2013/09 #01)
What's cooking (2013/09 #02)
What's cooking (2013/09 #03)
What's cooking (2013/09 #04)
What's cooking (2013/09 #05)
What's cooking (2013/09 #06)
What's cooking (2013/09 #07)
What's cooking (2013/09 #08)
What's cooking (2013/10 #01)
What's cooking (2013/10 #02)
What's cooking (2013/10 #03)