Write DWARF strings inline and remove .debug_str section.

This means we no longer de-duplicate strings. Contra-intuitively this
saves space since removal of the indirection (4 bytes per string)
outweights the saving that we had from removal of duplicated strings.

The removal of buffering and deduplication also speeds up the processing.

Change-Id: Iee559094ed6180363e1665fbc79493e624b63435
2 files changed