enh: added duplicate keywords for commonly used distributions
enh: added duplicate keywords for commonly used distributions

DIST_SCALAPACK == DIST_BLOCK_CYCLIC_FIRST_SPLIT
DIST_FFTW == DIST_BLOCK_LAST_ALL

Signed-off-by: Nick Papior <81a73bca3d342ffee33d7cf845fdbf77b6553831@gmail.com>

siesta-project/refype,siesta-project/buds,siesta-project/refype