Peter Schellenbach's patch: re-implement the PuTTY cryptographic

functions as calls to the MS Crypto API. Not integrated into the
Makefile yet, but should eventually allow building of an SSH-enabled
PuTTY which contains no native crypto code, so it can be used
everywhere (and anyone who can get the MS encryption pack can still
use the SSH parts).

[originally from svn r425]

scp.c

@@ -814,6 +814,9 @@ int main(int argc, char *argv[])
 	ssh_send_eof();
 	ssh_recv(&ch, 1);
     }
+#ifdef MSCRYPTOAPI
+    crypto_wrapup();
+#endif
     WSACleanup();
     random_save_seed();