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This patch ensures that the content of
sources/cxx-stl/gnu-libstdc++/libs/armeabi-v7a
really contains armeabi-v7a binaries, instead of
armeabi ones.

http://code.google.com/p/android/issues/detail?id=22141

Change-Id: I729d6504641f9c481901bc6ad017add56be9dbf5