localrepo: use local variable for requirements assignment A future patch will refactor requirements determination into a standalone function. To prepare for this, refactor the requirements code to assign to a local variable instead of to self.requirements.

destutil: ensure we offer 'hg update' hint when not at head in all cases In the merge case, we abort if the working copy is not at head, offering to run 'hg update' in the hint instead. In the rebase case, we do not abort in that case. Yet if no rebase destination are found, it still make sense to hint the user about running 'hg update'. So we re-introduce a conditional using this branch in the 'onheadcheck == False' case. This will get used on rebase use this function.

chg: forward umask from client to server This is necessary to make chg test pass on test-inherit-mode.t.

chgserver: add setumask method Before this patch, the server won't inherit umask from the client, which will fail test-inherit-mode.t. This patch provides a way for the client to change umask of the server, similar to chdir and setenv.