ssh: refactor libssh2-specific bits into their own file

src/libgit2/libgit2.c

@@ -34,7 +34,7 @@
 #include "streams/socket.h"
 #include "transports/smart.h"
 #include "transports/http.h"
-#include "transports/ssh.h"
+#include "transports/ssh_libssh2.h"
 
 #ifdef GIT_WIN32
 # include "win32/w32_leakcheck.h"
@@ -80,7 +80,7 @@ int git_libgit2_init(void)
 		git_sysdir_global_init,
 		git_filter_global_init,
 		git_merge_driver_global_init,
-		git_transport_ssh_global_init,
+		git_transport_ssh_libssh2_global_init,
 		git_stream_registry_global_init,
 		git_socket_stream_global_init,
 		git_openssl_stream_global_init,

src/libgit2/transports/ssh.h

-/*
- * Copyright (C) the libgit2 contributors. All rights reserved.
- *
- * This file is part of libgit2, distributed under the GNU GPL v2 with
- * a Linking Exception. For full terms see the included COPYING file.
- */
-#ifndef INCLUDE_transports_ssh_h__
-#define INCLUDE_transports_ssh_h__
-
-#include "common.h"
-
-int git_transport_ssh_global_init(void);
-
-#endif

src/libgit2/transports/ssh_libssh2.h

+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_transports_libssh2_h__
+#define INCLUDE_transports_libssh2_h__
+
+#include "common.h"
+
+#include "git2.h"
+#include "git2/transport.h"
+#include "git2/sys/transport.h"
+
+int git_transport_ssh_libssh2_global_init(void);
+
+int git_smart_subtransport_ssh_libssh2(
+	git_smart_subtransport **out,
+	git_transport *owner,
+	void *param);
+
+int git_smart_subtransport_ssh_libssh2_set_paths(
+	git_smart_subtransport *subtransport,
+	const char *cmd_uploadpack,
+	const char *cmd_receivepack);
+
+#endif