libext2fs, libe2p, misc: git rid of jfs_user.h

Having multiple versions of jfs_user.h was confusing the Android
build.  Clean up things by removing the lib/ext2fs/jfs_user.h and
misc/jfs_user.h and simplifying how we emulate the kernel
infrastructure needed by journal replay code and removing the
kernel-specific lines from kernel-jbd.h.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
12 files changed