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.

ssl/CMakeLists.txt

@@ -0,0 +1,53 @@
+include_directories(
+	.
+	../include
+	../include/compat
+)
+
+add_library(
+	ssl
+
+	bio_ssl.c
+	bs_ber.c
+	bs_cbb.c
+	bs_cbs.c
+	d1_both.c
+	d1_clnt.c
+	d1_enc.c
+	d1_lib.c
+	d1_meth.c
+	d1_pkt.c
+	d1_srtp.c
+	d1_srvr.c
+	pqueue.c
+	s23_clnt.c
+	s23_lib.c
+	s23_meth.c
+	s23_pkt.c
+	s23_srvr.c
+	s3_both.c
+	s3_cbc.c
+	s3_clnt.c
+	s3_enc.c
+	s3_lib.c
+	s3_meth.c
+	s3_pkt.c
+	s3_srvr.c
+	ssl_algs.c
+	ssl_asn1.c
+	ssl_cert.c
+	ssl_ciph.c
+	ssl_err.c
+	ssl_err2.c
+	ssl_lib.c
+	ssl_rsa.c
+	ssl_sess.c
+	ssl_stat.c
+	ssl_txt.c
+	t1_clnt.c
+	t1_enc.c
+	t1_lib.c
+	t1_meth.c
+	t1_reneg.c
+	t1_srvr.c
+)

ssl/Makefile.am

@@ -3,6 +3,7 @@ include $(top_srcdir)/Makefile.am.common
 lib_LTLIBRARIES = libssl.la
 
 EXTRA_DIST = VERSION
+EXTRA_DIST += CMakeLists.txt
 
 libssl_la_LDFLAGS = -version-info @LIBSSL_VERSION@ -no-undefined
 libssl_la_LIBADD = ../crypto/libcrypto.la