Added functions to convert from row-major to column-major ordering and back
Include clapack and blas if we have accelerate OR normal headers
xpotrf now just uses the opposite half of the matrix if the ordering is off
specs for clapack_getri now provide the expected results for getrf. They are no longer dependent on the success of the factorization.
Now also check for Accelerate framework
For xgetri, the only way to work with the column-major formats is to convert the ordering of the matrix back and forth.