Use f2c generated code instead of the original fortran code, except for dotc/dotu.
Use f2c generated code instead of the original fortran code, except for dotc/dotu.

mjbshaw/Eigen,mjbshaw/Eigen,madlib/eigen_backup,madlib/eigen_backup,mjbshaw/Eigen,rotorliu/eigen,madlib/eigen_backup,mjbshaw/Eigen,madlib/eigen_backup,rotorliu/eigen,rotorliu/eigen,rotorliu/eigen