read “OQ” attr from structured SAMRecord field

converting into and out of BAM using ADAM was dropping the “OQ” attr;
HTSJDK puts it in its own field but ADAM was looking for it in the
catch-all attributes field.
Revert "[ADAM-237] Migrate to Chill serialization libraries."

This reverts commit 39821152352e6647a244d1df24facafa53aa6923.
Bump scala from 2.10.3 to 2.10.4
Merge pull request #446 from massie/serializer

Revert "[ADAM-237] Migrate to Chill serialization libraries."
Merge pull request #449 from ryan-williams/origqual

read “OQ” attr from structured SAMRecord field
[ADAM-348] Stores original position and original cigar during realignment.
Addresses issue #348 in the adam project.