2.24.19
win32: don't convert '\n' to '\r\n' when copying if it already is '\r\n'

https://bugzilla.gnome.org/show_bug.cgi?id=649390
quartz: update the keymap only if the input method changed

and not on each keystroke, which for some IMs apparently caused a full
update on each keystroke, not just a check for changes. Patch from
Takuro Ashie, bug #698183.
quartz: remove check for keymap changes from update_keymap()

The function is now only called when the keymap has actually
changed. bug #698183.