Appveyor: Cygwin needs to install its own cmake after all.
Appveyor: Cygwin needs to install its own cmake after all.

super-test.sh tests building the samples with cmake. Without installing a cygwin-specific cmake, it ends up invoking the Windows-native cmake which doesn't work at all.

mologie/capnproto,mologie/capnproto,mologie/capnproto