refactor: make util an object library

Instead of simply including the utility files directly, make them a
cmake object library for easy reusability between other projects within
libgit2.

Now the top-level `src` is responsible for platform selection, while the
next-level `libgit2` and `util` configurations are responsible for
identifying what objects they include.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/libgit2/path.c b/src/libgit2/path.c
index 05a3dc2cf..a19340efe 100644
--- a/src/libgit2/path.c
+++ b/src/libgit2/path.c
@@ -9,6 +9,7 @@
 
 #include "repository.h"
 #include "fs_path.h"
+#include "utf8.h"
 
 typedef struct {
 	git_repository *repo;