[Wien] Update to SKEAF extremal area program

[Patrick Rourke]

Dear WIEN2k users,

This is an update to let you know that a new version (v1.2.0 r124) of
SKEAF extremal area code for extracting quantum oscillation
information from calculated Fermi surfaces has been released. The new
version contains several important improvements and bug fixes (see the
README-forSKEAF file for details), so users are highly recommended to
upgrade to this version.

As before, the SKEAF source code and program instructions can be
downloaded from the WIEN2k "Unsupported software goodies" page (
http://www.wien2k.at/reg_user/unsupported/ ). The algorithm underlying
the code is described in P.M.C. Rourke and S.R. Julian, Computer
Physics Communications 183, 324 (2012) (also available on the arXiv at
http://arxiv.org/abs/0803.1895 ).

Best regards,

Patrick Rourke