Added a dexdump test containing every DEX instruction

Rationale:
To get full dexdump coverage, every DEX instruction should at
least be tested once. Since it is hard to construct Java tests
that eventually yield every possible instruction, smali has been
used to construct the all.dex file with every DEX opcode.
NOTE that the DEX file does not verify (or even makes sense).
It is merely intended as test input to dexdump to ensure each
opcode renders well.

Change-Id: I44d534d5ea076a3dbc16233e27cb8940f00c1d57