Instruct mercurial to ignore build directory Python's distutil builds the package into ./build/, which can and should be ignored with respect to the repository. This patch simply adds the appropriate line to .hgignore.

VMM/handler: Create domain directory with umask 0022.

Modify address check query to obtain well-defined result The way in which UNION does not yield the desired result, because (a) UNION merges results and (b) the result order is undefined. This patch changes the query to select the counts as columns and hence provides a well-defined order.