Replace gmp_sign with a ternary block
Replace gmp_sign with a ternary block

gmp_sign is part of a non-bundled set of dependencies which are
difficult to install on OSX.

ilios/ilios,dartajax/ilios,Trott/ilios,justinchu17/ilios,stopfstedt/ilios,stopfstedt/ilios,ilios/ilios,dartajax/ilios,justinchu17/ilios,thecoolestguy/ilios,Trott/ilios,justinchu17/ilios,justinchu17/ilios,thecoolestguy/ilios