Added the ability to specify which image pairs to match
Added the ability to specify which image pairs to match

Change-Id: I71e9dd290bc8aa879d3739b215b73328b7e9cf52

zhanshenman/TheiaSfM,zhanshenman/TheiaSfM,zhanshenman/TheiaSfM,zhanshenman/TheiaSfM,zhanshenman/TheiaSfM