Don't call looping Module#constants from loop in Type.include_modules_from.
Don't call looping Module#constants from loop in Type.include_modules_from.

This looping over the same series of direct_superclasses is exponentially
redundant and wasteful (not to mention the extra overhead in Module#constants).

Wirachmat/rubinius,jemc/rubinius,heftig/rubinius,Wirachmat/rubinius,benlovell/rubinius,Wirachmat/rubinius,dblock/rubinius,sferik/rubinius,dblock/rubinius,digitalextremist/rubinius,jsyeo/rubinius,jemc/rubinius,digitalextremist/rubinius,ruipserra/rubinius,jsyeo/rubinius,benlovell/rubinius,Azizou/rubinius,ruipserra/rubinius,Azizou/rubinius,jsyeo/rubinius,Azizou/rubinius,Wirachmat/rubinius,dblock/rubinius,Wirachmat/rubinius,benlovell/rubinius,digitalextremist/rubinius,heftig/rubinius,benlovell/rubinius,ngpestelos/rubinius,kachick/rubinius,heftig/rubinius,jemc/rubinius,dblock/rubinius,Azizou/rubinius,Azizou/rubinius,kachick/rubinius,benlovell/rubinius,jemc/rubinius,benlovell/rubinius,sferik/rubinius,heftig/rubinius,Azizou/rubinius,Wirachmat/rubinius,sferik/rubinius,jsyeo/rubinius,digitalextremist/rubinius,ngpestelos/rubinius,ngpestelos/rubinius,Azizou/rubinius,jsyeo/rubinius,dblock/rubinius,kachick/rubinius,digitalextremist/rubinius,jemc/rubinius,kachick/rubinius,sferik/rubinius,ruipserra/rubinius,ngpestelos/rubinius,digitalextremist/rubinius,dblock/rubinius,kachick/rubinius,ruipserra/rubinius,jemc/rubinius,ruipserra/rubinius,benlovell/rubinius,ruipserra/rubinius,kachick/rubinius,jemc/rubinius,sferik/rubinius,Wirachmat/rubinius,digitalextremist/rubinius,jsyeo/rubinius,kachick/rubinius,heftig/rubinius,dblock/rubinius,jsyeo/rubinius,ngpestelos/rubinius,heftig/rubinius,heftig/rubinius,ngpestelos/rubinius,ruipserra/rubinius,sferik/rubinius,kachick/rubinius,ngpestelos/rubinius,sferik/rubinius