build-wolfssl: Allow a broader range of ciphers (Visual Studio)

This is an update to the build-time options used to build wolfSSL in
Visual Studio for greater compatibility, and make it behave similar to
the way OpenSSL 1.0.2 behaves. Starting in wolfSSL v3.6.6 static ciphers
and SSLv3 are disabled by default at build time, but we can use both.

- Enable static cipher suites TLS_ECDH_ and TLS_RSA_.

- Enable SSLv3 hello. Though in libcurl we disable it by default at
runtime, we make it available so the user can manually select it if
necessary.