Add support of 64-bit integer.
Control the output file in a better way.
When the inertia counting keeps failing, return a nonzero info to make the external routine stop.
Add a routine to estimate the spectral radius.
Remove the release of TODO.md and test/ folders since not useful for users.

Resolve the conflict in data format between symmetric and unsymmetric matrices.
Add an sample matrix for the unsymmetric case.
(Mathias) Update the functionality documentation (templated class DONE, conversion to SuperLU DONE, distinction between the symmetric and asymmetric PMatrix class).
(Lin) Add the FORTRAN interface for the support of unsymmetric matrices.
(future) Add expert user interface for PEXSI for k-point sampling and for spin related calculations.
x Release of some utility subroutines?
x Update software dependence in the config files
(Mathias) More "standard" config/make/make install process –> cmake option?
(Lin) MultiSolve routine does not work for complex arithmetic.
(Mathias) Equibration option should be turn on for symm / asymm matrix? asymm for sure. CAN'T BE USED
ROWPERM option for asymm matrices – example for a ill-conditioned matrix: test the efficiency v.s. accuracy