Make download progress be correctly displayed when the browser cannot report total size of files (as is the case in compressed downloads), but writing full size to the generated js.
Fixes according to pull request feedback.
Merge branch 'compressed_progress' into incoming
Merge branch 'incoming' of https://github.com/kripken/emscripten into incoming
Merge branch 'incoming' of https://github.com/kripken/emscripten into incoming

Conflicts:
	AUTHORS
	tools/file_packager.py
Allow going fullscreen in response to mousedown events
revert whitespace change
Merge branch 'fullscreen_mouse_events' of github.com:jechter/emscripten into incoming