Link libgmp.a embedded in the SwiftGMP.framework.
Link libgmp.a embedded in the SwiftGMP.framework.

Add the libgmp.a that the SwiftGMP project now copies into the SwiftGMP.framework
as a SwiftBase58 target Build Phase in Link Binary With Libraries.
This used to only have the SwiftGMP.framework but now also explicitly links the
libgmp.a

NeoTeo/SwiftBase58