Exclude library_spec.rb examples that are specific for *nix system when running specs on windows
Exclude library_spec.rb examples that are specific for *nix system when running specs on windows

tduehr/ffi,MikaelSmith/ffi,yghannam/ffi,majioa/ffi,MikaelSmith/ffi,ferventcoder/ffi,yghannam/ffi,ffi/ffi,mvz/ffi,ffi/ffi,tduehr/ffi,majioa/ffi,majioa/ffi,ferventcoder/ffi,sparkchaser/ffi,ferventcoder/ffi,mvz/ffi,sparkchaser/ffi,sparkchaser/ffi,tduehr/ffi,mvz/ffi,ffi/ffi,majioa/ffi,sparkchaser/ffi,tduehr/ffi,ferventcoder/ffi,mvz/ffi,yghannam/ffi,MikaelSmith/ffi,yghannam/ffi,yghannam/ffi,MikaelSmith/ffi