Fix issue #1523
Add ARPREC detection and bundle option to cmake build
Fix bugs in python modular examples introduced by 03c02571f1
Fix typo in cmake/FindARPREC.cmake
Travis: Try to fix numpy installat by pip
Restructure script: section
Travis: fix python 3.3 env
Travis: restructure python3 env
Travis: fix typo introduced in prev commit
Travis: use travis build env variable to detect python version
Travis: install dragonegg for fortran support for scipy
Travis: use wheel packages of scipy and numpy when building python3.3
issue #1491
Fix issue #1546
Attempt to fix issue #1547
few unit-tests added (log-det)
direct sparse linear solver using llt added (log-det)
access by index operator added for SGSparseMatrix
min eigenvalue check added (log-det)
big sparse matrix unit-test added (log-det)