Bump libgit2 to ca2466f

vmg · vmg · commit eb984693bef8 · 2015-06-29T16:00:52.000+02:00
diff --git a/vendor/libgit2 b/vendor/libgit2
@@ -1 +1 @@
-Subproject commit b977d0177222fea47f721acd225030eda09e65ba
+Subproject commit ca2466ff4022cd539e8126ac9746fd25977fc1cc
