add aligner expected by current SSPACE to SSpace/Config.pm; fixes issue #67

[coffeetocode]

Tested using current version of SSPACE (SSPACE-STANDARD-3.0_linux-x86_64) as described in issue #67.

Hopefully this is usable/mergeable as-is, but let me know if there are questions/concerns. I wouldn't want to accidentally break people relying on old versions of sspace, but don't know when they made the change so I don't know how old "old" is.