* If you have several mxe-octavebuild dirs (for e.g., stable and several development versions) it is handy to have a separate pkg subdir symlinked to from all mxe-octave build dirs. That will save a lot of downloading bandwidth.
* To keep mxe-octave up-to-date, from time to time do:
hg -v pull
hg -v update
* However, do not keep mxe-octave build dirs for too long. I'd suggest to wipe a build dir after at most two or three months and start over with a fresh clone a la Step 1.
* In the mean time, regularly clean up <mxe-octave build>/log to save disk space. After a first successful build there's no more use for the log subdirs for each package, so you can wipe them all.