Switch to using .pak files for locale data on Windows.

Switch to using .pak files for locale data on Windows.
    
We were using .dlls, but the .pak files are smaller and this will
allow us to share more code across platforms.
                
- Remove app/locales.gyp (used on win to generate the locale
  dlls) and references to it in other gyp(i) files.
- Update various packaging scripts.
- Move functions from resource_bundle_posix.cc to
  resource_bundle.cc (LoadResourcesDataPak, UnloadLocaleResources,
  GetLocalizedString, LoadLocaleResources) and delete the
  corresponding functions from resource_bundle_win.cc.

Fixes from previous patch:
- Made dependencies of packed_resources explicit (MSVS can't figure
  it out from the inputs).
- Removed a couple cases where we were looking for dlls on Windows
  (in l10n_util.cc and l10n_util_unittest.cc).

BUG=92724
TBR=cpu

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=98103

[tony, 2011-08-24 19:43:15]

Some small build fixes.  Should pass for incremental builds and clobber builds.

[tony, 2011-08-24 20:22:29]

I'm going to TBR this change because I want to watch it in the tree for a few
hours.