Use the initializer for repository init options

Author: carlosmn

pygit2/__init__.py

@@ -82,7 +82,7 @@ def init_repository(path, bare=False,
 
     # Options
     options = ffi.new('git_repository_init_options *')
-    options.version = 1
+    C.git_repository_init_init_options(options, C.GIT_REPOSITORY_INIT_OPTIONS_VERSION)
     options.flags = flags
     options.mode = mode
     options.workdir_path = to_bytes(workdir_path)

pygit2/decl.h

@@ -462,6 +462,9 @@ typedef struct {
 	const char *origin_url;
 } git_repository_init_options;
 
+#define GIT_REPOSITORY_INIT_OPTIONS_VERSION ...
+int git_repository_init_init_options(git_repository_init_options *opts, int version);
+
 int git_repository_init(
 	git_repository **out,
 	const char *path,