Emit -D, -U also for PCH: user dictionaries (that do not end up in the PCH) might require it. Fixes io/address.


git-svn-id: https://root.cern.ch/svn/root/branches/dev/root6-pch@48859 27541ba8-7e3a-0410-8455-c3a389f83636
Update USB stick vm hack to x86_64 with GCC 4.6.2


git-svn-id: https://root.cern.ch/svn/root/branches/dev/root6-pch@48860 27541ba8-7e3a-0410-8455-c3a389f83636