* #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/third_party/build/os-darwinos.mak b/jni/pjproject-android/third_party/build/os-darwinos.mak
index a9c740f..6a53b71 100644
--- a/jni/pjproject-android/third_party/build/os-darwinos.mak
+++ b/jni/pjproject-android/third_party/build/os-darwinos.mak
@@ -3,5 +3,7 @@
 DIRS += speex
 DIRS += portaudio
 DIRS += g7221
+DIRS += srtp
+DIRS += resample