Replace pqueue with code from hashsig heap

I accidentally wrote a separate priority queue implementation when
I was working on file rename detection as part of the file hash
signature calculation code.  To simplify licensing terms, I just
adapted that to a general purpose priority queue and replace the
old priority queue implementation that was borrowed from elsewhere.

This also removes parts of the COPYING document that no longer
apply to libgit2.

1 files changed, 10 insertions, 0 deletions

diff --git a/src/vector.h b/src/vector.h
index d318463c6..e8a967813 100644
--- a/src/vector.h
+++ b/src/vector.h
@@ -95,4 +95,14 @@ GIT_INLINE(void) git_vector_set_cmp(git_vector *v, git_vector_cmp cmp)
 	}
 }
 
+/** Swap two elements */
+#define git_vector_swap_elements(V, P1, P2) do { \
+	void *__t = (V)->contents[P1]; \
+	(V)->contents[P1] = (V)->contents[P2]; \
+	(V)->contents[P2] = __t; } while (0)
+
+/** Compare two elements */
+#define git_vector_cmp_elements(V, P1, P2) \
+	(V)->_cmp(git_vector_get(V,P1), git_vector_get(V,P2))
+
 #endif