Replace OpenSSL with PolarSSL

Works on windows, not yet cmake.

Externals/polarssl/library/CMakeLists.txt

@@ -0,0 +1,70 @@
+option(USE_SHARED_POLARSSL_LIBRARY "Build PolarSSL as a shared library." OFF)
+
+set(src
+     aes.c
+     arc4.c
+     asn1parse.c
+     asn1write.c
+     base64.c
+     bignum.c
+     blowfish.c
+     camellia.c
+     certs.c
+     cipher.c
+     cipher_wrap.c
+     ctr_drbg.c
+     debug.c
+     des.c
+     dhm.c
+     entropy.c
+     entropy_poll.c
+     error.c
+     gcm.c
+     havege.c
+     md.c
+     md_wrap.c
+     md2.c
+     md4.c
+     md5.c
+     net.c
+     padlock.c
+     pbkdf2.c
+     pem.c
+     pkcs5.c
+     pkcs11.c
+     pkcs12.c
+     rsa.c
+     sha1.c
+     sha2.c
+     sha4.c
+     ssl_cache.c
+     ssl_cli.c 
+     ssl_srv.c 
+     ssl_tls.c
+     timing.c
+     version.c
+     x509parse.c
+     x509write.c
+     xtea.c
+)
+
+if(WIN32)
+set(libs ws2_32)
+endif(WIN32)
+
+if(NOT USE_SHARED_POLARSSL_LIBRARY)
+
+add_library(polarssl STATIC ${src})
+
+else(NOT USE_SHARED_POLARSSL_LIBRARY)
+
+add_library(polarssl SHARED ${src})
+set_target_properties(polarssl PROPERTIES VERSION 1.2.8 SOVERSION 2)
+
+endif(NOT USE_SHARED_POLARSSL_LIBRARY)
+
+target_link_libraries(polarssl ${libs})
+
+install(TARGETS polarssl
+        DESTINATION ${LIB_INSTALL_DIR}
+        PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE)