Merge branch 'jk/pack-revindex'

In-core storage of the reverse index for .pack files (which lets
you go from a pack offset to an object name) has been streamlined.

* jk/pack-revindex:
pack-revindex: store entries directly in packed_git
pack-revindex: drop hash table

diff --cc cache.h
index c63fcc113a6e511a53f0170a07bd5dbbf12cc120,6603787442bb20ba8f1efde67b45b4f6c8276cca..bf00ce55f8094e36d414722035a1201789fe79ac
--- 1/cache.h
--- 2/cache.h
+++ b/cache.h
@@@ -7,33 -7,14 +7,34 @@@
  #include "advice.h"
  #include "gettext.h"
  #include "convert.h"
 +#include "trace.h"
 +#include "string-list.h"
+ #include "pack-revindex.h"
  
  #include SHA1_HEADER
 -#ifndef git_SHA_CTX
 -#define git_SHA_CTX   SHA_CTX
 -#define git_SHA1_Init SHA1_Init
 -#define git_SHA1_Update       SHA1_Update
 -#define git_SHA1_Final        SHA1_Final
 +#ifndef platform_SHA_CTX
 +/*
 + * platform's underlying implementation of SHA-1; could be OpenSSL,
 + * blk_SHA, Apple CommonCrypto, etc...  Note that including
 + * SHA1_HEADER may have already defined platform_SHA_CTX for our
 + * own implementations like block-sha1 and ppc-sha1, so we list
 + * the default for OpenSSL compatible SHA-1 implementations here.
 + */
 +#define platform_SHA_CTX      SHA_CTX
 +#define platform_SHA1_Init    SHA1_Init
 +#define platform_SHA1_Update  SHA1_Update
 +#define platform_SHA1_Final           SHA1_Final
 +#endif
 +
 +#define git_SHA_CTX           platform_SHA_CTX
 +#define git_SHA1_Init         platform_SHA1_Init
 +#define git_SHA1_Update               platform_SHA1_Update
 +#define git_SHA1_Final                platform_SHA1_Final
 +
 +#ifdef SHA1_MAX_BLOCK_SIZE
 +#include "compat/sha1-chunked.h"
 +#undef git_SHA1_Update
 +#define git_SHA1_Update               git_SHA1_Update_Chunked
  #endif
  
  #include <zlib.h>
@@@ -1296,9 -1116,9 +1297,10 @@@ extern struct packed_git 
        int pack_fd;
        unsigned pack_local:1,
                 pack_keep:1,
 +               freshened:1,
                 do_not_close:1;
        unsigned char sha1[20];
+       struct revindex_entry *revindex;
        /* something like ".git/objects/pack/xxxxx.pack" */
        char pack_name[FLEX_ARRAY]; /* more */
  } *packed_git;

diff --cc pack-bitmap.c
Simple merge