PeerConnection Java: explicitly cast DataChannel* to jlong for Java. Otherwise on 32-bit ARM Android the nativeDataChannel param the Java ctor sees is a 64-bit value whose low 32 bits are the pointer, and whose high 32-bits are garbage.
PeerConnection Java: explicitly cast DataChannel* to jlong for Java.
Otherwise on 32-bit ARM Android the nativeDataChannel param the Java ctor sees
is a 64-bit value whose low 32 bits are the pointer, and whose high 32-bits are
garbage.

BUG=2302
R=wu@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/2114004

git-svn-id: 917f5d3ca488f358c4d40eaec14422cf392ccec9@4665 4adac7df-926f-26a2-2b94-8c16560cd09d

mwgoldsmith/ilbc,mwgoldsmith/ilbc,TimothyGu/libilbc,mwgoldsmith/ilbc,mwgoldsmith/libilbc,TimothyGu/libilbc,mwgoldsmith/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,mwgoldsmith/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,mwgoldsmith/libilbc,mwgoldsmith/ilbc,TimothyGu/libilbc