Implement FUSE operations in AppFuse JNI.

The CL adds the following operations.

 * FUSE_LOOKUP
 * FUSE_OPEN
 * FUSE_READ
 * FUSE_RELEASE
 * FUSE_FLUSH

BUG=25756145

Change-Id: Ib57d7d0ade3343a604a1c40e4b2c2a2d089f3715
4 files changed