path: hide the dotgit file functions

These can't go into the public API yet as we don't want to introduce API or ABI
changes in a security release.

include/git2/sys/path.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_sys_git_path_h__
-#define INCLUDE_sys_git_path_h__
-
-#include "git2/common.h"
-#include "git2/types.h"
-
-GIT_BEGIN_DECL
-
-/**
- * Check whether a path component corresponds to a .gitmodules file
- *
- * @param name the path component to check
- */
-GIT_EXTERN(int) git_path_is_dotgit_modules(const char *name);
-
-/**
- * Check whether a path component corresponds to a .gitignore file
- *
- * @param name the path component to check
- */
-GIT_EXTERN(int) git_path_is_dotgit_ignore(const char *name);
-
-/**
- * Check whether a path component corresponds to a .gitignore file
- *
- * @param name the path component to check
- */
-GIT_EXTERN(int) git_path_is_dotgit_attributes(const char *name);
-
-GIT_END_DECL
-#endif

src/path.h

@@ -644,4 +644,25 @@ extern bool git_path_isvalid(
  */
 int git_path_normalize_slashes(git_buf *out, const char *path);
 
+/**
+ * Check whether a path component corresponds to a .gitmodules file
+ *
+ * @param name the path component to check
+ */
+extern int git_path_is_dotgit_modules(const char *name);
+
+/**
+ * Check whether a path component corresponds to a .gitignore file
+ *
+ * @param name the path component to check
+ */
+extern int git_path_is_dotgit_ignore(const char *name);
+
+/**
+ * Check whether a path component corresponds to a .gitignore file
+ *
+ * @param name the path component to check
+ */
+extern int git_path_is_dotgit_attributes(const char *name);
+
 #endif

tests/path/dotgit.c

 #include "clar_libgit2.h"
 #include "path.h"
 
-#include "git2/sys/path.h"
-
 static char *gitmodules_altnames[] = {
 	".gitmodules",