Batch targeted compilations
Batch targeted compilations

The compile.object.profile target could be used by "aq reconfigure
--list" with a potentially large list of objects, so batching is needed
to get good performance.

Change-Id: I638601b33c52bd83c1eeabf41892a7fa46c24c40
Reviewed-by: Dave Reeve <6a84ee3ae0690d4584b99406fb3076392171f50e@morganstanley.com>

guillaume-philippon/aquilon,quattor/aquilon,guillaume-philippon/aquilon,quattor/aquilon,guillaume-philippon/aquilon,quattor/aquilon