(repeat?) hgrc parts cloned with repo....

[Marcin Kasperski]

It would be really nice if some parts of hgrc could be cloned with
repo. Currently after every clone one must remember to copy some
settings to the new .hg/hgrc. And this is tedious.

Examples? Well, I write this just after I once more forgot to copy
keyword maps ([keyword] section), but also remote repository aliases
or extensions which always need to be enabled constitute good samples.

How could it work? Well, IMO it would be best if just like there is
.hgignore, there could be .hgrc, which would be normally version
managed and cloned, but handled just like .hg/hgrc (it is probably
best if BOTH could be handled, maybe with .hg/hgrc taking preference
in case - say - some alias is defined in both places).