git-zlib: move declarations for git-zlib functions from cache.h

Move functions from cache.h for zlib.c into a new header file.  Since
adding a "zlib.h" would cause issues with the real zlib, rename zlib.c
to git-zlib.c while we are at it.

Signed-off-by: Elijah Newren <newren@gmail.com>
Acked-by: Calvin Wan <calvinwan@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/http.h b/http.h
index 77c042706c..783b2b09b8 100644
--- a/http.h
+++ b/http.h
@@ -1,7 +1,10 @@
 #ifndef HTTP_H
 #define HTTP_H
 
+struct packed_git;
+
 #include "cache.h"
+#include "git-zlib.h"
 
 #include <curl/curl.h>
 #include <curl/easy.h>