meldapp: Add helper to get the current MeldWindow and use
Update _() imports to use unicode-ifying meld.conf version (bgo#726116)
Updated Brazilian Portuguese translation
Finnish translation update by Jiri Grönroos
Updated Spanish translation
Updated Spanish translation
build_helpers: Remove trailing slash that distutils on Windows hates
setup.py: Put README-style docs under the correct module
bin/meld: Add support for detecting frozen execution
bin/meld: Load libintl differently when frozen

If running from frozen, we'll use the exact libintl that we've
included with the binary.
meld.conf: Treat frozen installs differently as layouts will change
bin/meld: Treat gsettings as the same case for frozen and uninstalled
setup_win32.py: Add initial separate setup for win32 build
build_helpers: Extend base build's subcommands instead of subclassing

This plays more nicely with cx_freeze's build step.
build_helpers: Place gschemas elsewhere if frozen

This still doesn't actually compile gschemas; for now that remains a
manual process on Windows.
build_helpers: Attempt at building translations, but still not working

intltool is the current blocker here, and it requires a more complete
build environment that we currently assume.
build_helpers: Install icons in share/meld when frozen
data/icons/meld.ico: New Windows icon file for main Meld icon
setup.py: Fix for distutils build change
Updated Italian translation