TODO list for MCLinker
                ----------------------
2012-07-05 Luba Tang

* Define mcld::Module and mcld::IRBuilder
* New project - MCLoader - to open the power of OS kernel to virtual machines.

2011-12-11 luba.tang

* Define SectionMap and SegmentMap for section merge.
* Initial standard SectionMap and SegmentMap in MCLinker.
  Triggered by MCLDDriver::initMCLinker().
* Targets need to modify SegmentMap and SectionMap. To provide APIs in TargetLDBackend.

2011-11-27 luba.tang

* precise numeral system
  remove big-enough numeral system. Use precise SizeTraits<T> everywhere.