merge: make function try_merge_command non static

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/merge.c

@@ -548,7 +548,7 @@ static void write_tree_trivial(unsigned char *sha1)
 		die("git write-tree failed to write a tree");
 }
 
-static int try_merge_command(const char *strategy, struct commit_list *common,
+int try_merge_command(const char *strategy, struct commit_list *common,
 		      const char *head_arg, struct commit_list *remotes)
 {
 	const char **args;

merge-recursive.h

@@ -54,4 +54,7 @@ int merge_recursive_generic(struct merge_options *o,
 void init_merge_options(struct merge_options *o);
 struct tree *write_tree_from_memory(struct merge_options *o);
 
+/* builtin/merge.c */
+int try_merge_command(const char *strategy, struct commit_list *common, const char *head_arg, struct commit_list *remotes);
+
 #endif