This copy of STLport was taken from the Android NDK git repository:
https://android.googlesource.com/platform/ndk.git
under sources/cxx-stl/stlport/.
The last changes to that directory come from commit ba4baa4

The overrides/ directory contains Mozilla-specific overrides to the standard
  C++ headers found in the NDK.

The following patches are applied on top:
- android-mozilla-config.patch: Adjusts Android-specific configuration
  to the mozilla codebase use of the STL.