BUG: linalg/test_build.py incorrectly reports conflicting fortran versio...

...ns if lapack_lite.so links against multiple fortran libraries

See: linalg/tests/test_build.py incorrectly reports both g77 and gfortran (Trac #1519) (#2116)
The example we see of this is on CENTOS/RHEL 5 where numpy is built using gcc44/gfortran44 using OpenBLAS (from EPEL).
In that case lapack_lite.so links against /usr/lib64/libgfortran.so.1 and /usr/lib64/libgfortran.so.3
The test has been changed so that it only reports a failure if lapack_lite.so links against BOTH libg2c and libgfortran.