Make libmlservo a dynamic library?

[asajeffrey]

At the moment both Servo2D and Servo3D have a staticly linked libmlservo, which doubles the space usage.

[asajeffrey]

Well here's a shot at it... asajeffrey@9e74129

Unfortunately, this produces a link error:

[Servo3D] Linking program Servo3D...
/Users/ajeffrey/MagicLeap/mlsdk/v0.22.0/tools/toolchains/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld: Servo3D: hidden symbol `atexit' in /Users/ajeffrey/MagicLeap/mlsdk/v0.22.0/lumin/usr/lib/crtbegin_dynamic.o is referenced by DSO
/Users/ajeffrey/MagicLeap/mlsdk/v0.22.0/tools/toolchains/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld: final link failed: Bad value
clang: error: linker command failed with exit code 1 (use -v to see invocation)