ui.py: normalize settings every time the configuration changes
Previously, we would normalize settings (e.g. turn relative paths into
absolute ones) only after reading a config file.
Now "--config paths.foo=bar" will use the cwd to make "bar" an absolute
path.
#!/bin/sh
mkdir a
cd a
hg init
echo foo > b
hg add b
hg ci -m "b" -d "1000000 0"
chmod -w .hg
cd ..
hg clone a b
chmod +w a/.hg # let test clean up
cd b
hg verify