qidoc.core.Builder: out_dir now defaults to 'build-doc'
qidoc.core.Builder: out_dir now defaults to 'build-doc'

Change-Id: Ib1558921bf66805a6030a0be8edd762d4b289598

aldebaran/qibuild,aldebaran/qibuild,dmerejkowsky/qibuild,dmerejkowsky/qibuild,dmerejkowsky/qibuild,dmerejkowsky/qibuild,aldebaran/qibuild,dmerejkowsky/qibuild,aldebaran/qibuild