V2.2.6 - Jul 22, 2015

• Switched to a stable sort to avoid some potential reproducibility confusions.
• Added 'install' target for *nix platforms.
• Added the Intel TBB option which provides in most situations a better performance
  output. TBB is not present by default in the current build but can be added
  by compiling the source code with WITH_TBB=1 option.
• Fixed a bug that caused seed lenght to be dependent of the -L and -N parameters order.
• Fixed a bug that caused --local followed by -N to reset seed lenght to 22 which is
  actually the default value for global.
• Enable compilation on FreeBSD and clang, although gmake port is still required.
• Fixed an issue that made bowtie2 compilation process to fail on Snow Leopard.