Add prebuild OpenSSL, and remove SCHANNEL code and whatever it was on MacOS. Build mingw for 64-bit.

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@4088 ed5197a5-7fde-0310-b194-c3ffbd925b24

deps/openssl/mingw64/lib/pkgconfig/libssl.pc

@@ -0,0 +1,11 @@
+prefix=/home/cory/src/tildefriends/deps/openssl/mingw64
+exec_prefix=${prefix}
+libdir=${exec_prefix}/lib
+includedir=${prefix}/include
+
+Name: OpenSSL-libssl
+Description: Secure Sockets Layer and cryptography libraries
+Version: 1.1.1g
+Requires.private: libcrypto
+Libs: -L${libdir} -lssl
+Cflags: -I${includedir}