A lot of refactoring and polishing
 Major overhaul of symmetry and integral code. Cholesky is temporarily borked.
 Cholesky fixed.
 Ih works. Moved integrals to new Task system.
Merge branch 'master' into new_input

Conflicts:
	rules.mk
	src/Makefile
	src/symmetry/symmetry.cxx
	src/tensor/composite_tensor.hpp
	src/tensor/dense_tensor.hpp
 branch new_input works on OSX too
 New task system working -- lacking in features though
 Switched DistTensor to CTF_Tensor interface. Changed all virtual operations to string instead of int*
 Better comment
 First draft of tasks system finished
Merge branch 'master' of https://code.google.com/p/aquarius-chem into new_input

Conflicts:
	src/tensor/symblocked_tensor.cxx
 Fixed non-deterministic task scheduling problem :)
 Minor refactor
 Added virtual destructors for integral evaluators
Merge branch 'new_input' of https://code.google.com/p/aquarius-chem into new_input
Merge branch 'new_input'