tests/test-diff-newlines

i18n-pt_BR: synchronized and updated

- synchronized with hg 6019e6517f95
- translated remaining messages
- many spelling and formatting fixes

#!/bin/sh

hg init
python -c 'print "confuse str.splitlines\nembedded\rnewline"' > a
hg ci -Ama -d '1 0'
echo clean diff >> a
hg ci -mb -d '2 0'
hg diff -r0 -r1