openssl binary with OPENSSL_BIN. This will allow us to use the OPENSSL
variable from mk.conf or the make(1) command line indicating if we're
building with our without OpenSSL, and ultimately get the regress tests
working in the OPENSSL=no configuration.
OpenBSD-Regress-ID: 2d788fade3264d7803e5b54cae8875963f688c4e
allowing it to be overridden. Do the same in the PuTTY tests since it's
needed there and not exported by test-exec.sh.
OpenBSD-Regress-ID: c49dcd6aa7602a8606b7afa192196ca1fa65de16
allows overriding if necessary (eg in -portable where we're testing against a
specific version of OpenSSL).
OpenBSD-Regress-ID: 491f39cae9e762c71aa4bf045803d077139815c5
[regress/Makefile regress/test-exec.sh regress/putty-ciphers.sh]
[regress/putty-kex.sh regress/putty-transfer.sh regress/ssh2putty.sh]
basic (crypto, kex and transfer) interop regression tests against putty
To run these, install putty and run "make interop-tests" from the build
directory - the tests aren't run by default yet.
