add initial CMake and Visual Studio build support

This moves the compatibility include files from include to
include/compat so we can use the awful MS C compiler
<../include/> trick to emulate the GNU #include_next extension.

This also removes a few old compat files we do not need anymore.

apps/Makefile.am

@@ -88,6 +88,7 @@ noinst_HEADERS += timeouts.h
 EXTRA_DIST = cert.pem
 EXTRA_DIST += openssl.cnf
 EXTRA_DIST += x509v3.cnf
+EXTRA_DIST += CMakeLists.txt
 
 install-exec-hook:
 	@if [ "@OPENSSLDIR@x" != "x" ]; then \