Setup new alias when storing reference in method table to alias
Setup new alias when storing reference in method table to alias

When we store a reference to an alias in the method table, we setup a
new alias to the original method. This prevents from creating infinite
recursion in the case described in the spec in the previous commit.

Fixes #1813

digitalextremist/rubinius,pH14/rubinius,pH14/rubinius,mlarraz/rubinius,digitalextremist/rubinius,mlarraz/rubinius,ngpestelos/rubinius,dblock/rubinius,Wirachmat/rubinius,ruipserra/rubinius,heftig/rubinius,jsyeo/rubinius,jsyeo/rubinius,kachick/rubinius,jsyeo/rubinius,ruipserra/rubinius,digitalextremist/rubinius,dblock/rubinius,ruipserra/rubinius,jsyeo/rubinius,kachick/rubinius,heftig/rubinius,pH14/rubinius,jsyeo/rubinius,ngpestelos/rubinius,jemc/rubinius,Wirachmat/rubinius,dblock/rubinius,sferik/rubinius,Wirachmat/rubinius,sferik/rubinius,kachick/rubinius,heftig/rubinius,sferik/rubinius,ngpestelos/rubinius,Azizou/rubinius,Azizou/rubinius,digitalextremist/rubinius,benlovell/rubinius,jemc/rubinius,heftig/rubinius,heftig/rubinius,Azizou/rubinius,benlovell/rubinius,ruipserra/rubinius,digitalextremist/rubinius,jsyeo/rubinius,kachick/rubinius,benlovell/rubinius,mlarraz/rubinius,ngpestelos/rubinius,ruipserra/rubinius,jemc/rubinius,sferik/rubinius,mlarraz/rubinius,ngpestelos/rubinius,Azizou/rubinius,Azizou/rubinius,sferik/rubinius,benlovell/rubinius,benlovell/rubinius,heftig/rubinius,ruipserra/rubinius,Wirachmat/rubinius,ruipserra/rubinius,Azizou/rubinius,dblock/rubinius,Wirachmat/rubinius,jemc/rubinius,Wirachmat/rubinius,heftig/rubinius,kachick/rubinius,benlovell/rubinius,jemc/rubinius,kachick/rubinius,jemc/rubinius,pH14/rubinius,kachick/rubinius,Wirachmat/rubinius,sferik/rubinius,pH14/rubinius,digitalextremist/rubinius,kachick/rubinius,ngpestelos/rubinius,ngpestelos/rubinius,digitalextremist/rubinius,pH14/rubinius,jemc/rubinius,Azizou/rubinius,pH14/rubinius,sferik/rubinius,mlarraz/rubinius,dblock/rubinius,dblock/rubinius,mlarraz/rubinius,dblock/rubinius,jsyeo/rubinius,benlovell/rubinius,mlarraz/rubinius