Bug#709165: Update SuperLU package to 4.3

[Torquil Macdonald Sørensen]

Source: superlu
Followup-For: Bug #709165

SuperLU 4 seems to be stuck in Experimental. When is it expected to
pass to Sid?

Best regards
Torquil Sørensen

-- System Information:
Debian Release: jessie/sid
  APT prefers unstable
  APT policy: (990, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.12-1-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_GB.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash