Clean up code info table layout

Clean up code info table layout

Previously:
Table layout was computed multiple places like stack_map_stream,
and getters. This made it difficult to add new stack map tables and
made the code hard to understand.

This change makes the table layout specified all inside of the code
info. Updating the layout only requires changing ComputeTableOffsets.

Changed the stack map inline info offset to be an index, so that it is
not require the inline infos are directly after the dex register table.

Oat file size for a large app: 94459576 -> 93882040 (-0.61%)

Updated oatdump and fixed a bug that was incorrectly computing the
register mask bytes.

Bug: 34621054

Test: test-art-host

Change-Id: I3a7f141e09d5a18bce2bc6c9439835244a22016e