jni_util: Add GetJavaStackTrace.
jni_util: Add GetJavaStackTrace.

wpilibsuite/ntcore,wpilibsuite/ntcore,333fred/ntcore,robotdotnet/ntcore,wpilibsuite/ntcore,robotdotnet/ntcore,robotdotnet/ntcore,robotdotnet/ntcore,333fred/ntcore,333fred/ntcore,333fred/ntcore,wpilibsuite/ntcore