Added support for other clang on Ubuntu 12.04
Added support for other clang on Ubuntu 12.04

A Ubuntu 12.04 compatible version of clang-3.4.1 can be downloaded from
http://llvm.org/releases/3.4.1/clang+llvm-3.4.1-x86_64-unknown-ubuntu12.04.tar.xz

Signed-off-by: Mark Charlebois <f1891e7fc976ae1bd489627e2954fb730751d728@gmail.com>

mje-nz/PX4-Firmware,dagar/Firmware,krbeverx/Firmware,jlecoeur/Firmware,PX4/Firmware,krbeverx/Firmware,jlecoeur/Firmware,jlecoeur/Firmware,mcgill-robotics/Firmware,Aerotenna/Firmware,krbeverx/Firmware,dagar/Firmware,dagar/Firmware,dagar/Firmware,mcgill-robotics/Firmware,mje-nz/PX4-Firmware,acfloria/Firmware,PX4/Firmware,mje-nz/PX4-Firmware,jlecoeur/Firmware,Aerotenna/Firmware,darknight-007/Firmware,mcgill-robotics/Firmware,acfloria/Firmware,mcgill-robotics/Firmware,dagar/Firmware,jlecoeur/Firmware,acfloria/Firmware,jlecoeur/Firmware,darknight-007/Firmware,Aerotenna/Firmware,krbeverx/Firmware,PX4/Firmware,darknight-007/Firmware,krbeverx/Firmware,acfloria/Firmware,Aerotenna/Firmware,mje-nz/PX4-Firmware,PX4/Firmware,mcgill-robotics/Firmware,krbeverx/Firmware,mje-nz/PX4-Firmware,mcgill-robotics/Firmware,dagar/Firmware,acfloria/Firmware,krbeverx/Firmware,jlecoeur/Firmware,darknight-007/Firmware,PX4/Firmware,mje-nz/PX4-Firmware,mje-nz/PX4-Firmware,darknight-007/Firmware,PX4/Firmware,acfloria/Firmware,Aerotenna/Firmware,Aerotenna/Firmware,mcgill-robotics/Firmware,Aerotenna/Firmware,jlecoeur/Firmware,acfloria/Firmware,dagar/Firmware,PX4/Firmware