* #39101: updated pjsip stack, many android build enhancements.
The main issue here is due to the build system of the stack compared to a pure Android
NDK project. Generating arm and x86 ABI at the same time does not seem to be possible.
diff --git a/jni/pjproject-android/doc/pjsip-book/index.rst b/jni/pjproject-android/doc/pjsip-book/index.rst
new file mode 100644
index 0000000..4ffce9e
--- /dev/null
+++ b/jni/pjproject-android/doc/pjsip-book/index.rst
@@ -0,0 +1,36 @@
+
+.. The PJSIP Book documentation master file, created by
+ sphinx-quickstart on Sat Nov 30 06:36:26 2013.
+ You can adapt this file completely to your liking, but it should at least
+ contain the root `toctree` directive.
+
+Welcome to The PJSIP Book's documentation!
+==========================================
+
+Contents:
+
+.. toctree::
+ :maxdepth: 2
+
+ intro
+ consider
+ intro_pjsua2
+ endpoint
+ account
+ media
+ call
+ presence
+ samples
+ optimization
+ media_quality
+ network_problems
+ reference
+
+
+Indices and tables
+==================
+
+* :ref:`genindex`
+* :ref:`modindex`
+* :ref:`search`
+