Dan Fandrich patch:

1 - let libssh2 compile with OpenSSL 0.9.6b.  This is due to 'crypt' is found
in one of its header files and EVP_MAX_BLOCK_LENGTH not being found.

2 - The EXEEXT patch is because automake 1.7 doesn't support it, and recent
automakes add it automatically

src/openssl.c

@@ -39,6 +39,10 @@
 #include "libssh2_priv.h"
 #include <string.h>
 
+#ifndef EVP_MAX_BLOCK_LENGTH
+#define EVP_MAX_BLOCK_LENGTH 32
+#endif
+
 int _libssh2_rsa_new(libssh2_rsa_ctx **rsa,
 		     const unsigned char *edata,
 		     unsigned long elen,