Revert "Report problems as errors in dx (with exit codes)"

This reverts commit 532f8d71c0e8dd90bd52091aef494c2dbd4f81c5.
Revert "Fix bug on register compatibility."

This reverts commit b4c2293340914473ffd92ac83ff3f87ad1f8c8e3.
Revert "Don't crash if the dmtracedump -d file doesn't exist."

This reverts commit 4283d5a19b3bb81e8f130c4aca1eb04693317a1d.
Revert "dvz: remove dead code."

This reverts commit a1383694fef31feade8e8fe52d520d64f185a654.
Revert "Use ALOGE rather than SLOGE for mountEmulatedStorage failures."

This reverts commit 42ae685e1628806d83ebfdd10afeef90234e92fe.