chgserver: add [alias] to confighash...
chgserver: add [alias] to confighash
The [alias] config section affects a global state: commands.table. It's hard
to trace whether an alias is added by a config option or an extension, and
add/remove aliases in a safe way per chg request. It will hurt performance a
bit if we clean the table and parse aliases every time. Therefore let's just
add it to confighash.
This will make chg pass test-pager.t.