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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

Review URL: http://codereview.chromium.org/7714028

TBR=tony@chromium.org
Review URL: http://codereview.chromium.org/7744053

TBR=battre@chromium.org
Review URL: http://codereview.chromium.org/7759001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@98427 0039d316-1c4b-4281-b951-d872f2087c98