Build: Build changes for multi oat/image support.

Use the --multi-image option to generate a preopted boot image. This
generates a separate oat file and image file output for each dex file
input.

Stop inlining core.

(cherry picked from commit d1d3fd933f3d79dfffc12c68a21ae1a1e1b21cc0)

Change-Id: Ibd23bc06d346ff404cabd88f7461f041af6016dd
2 files changed