Retire info/rev-cache

It was one of those things that were well intentioned but did not turn
out to be useful in practice.

Signed-off-by: Junio C Hamano <junkio@cox.net>

.gitignore

@@ -6,7 +6,6 @@ git-applypatch
 git-archimport
 git-bisect
 git-branch
-git-build-rev-cache
 git-cat-file
 git-checkout
 git-checkout-index
@@ -78,7 +77,6 @@ git-sh-setup
 git-shortlog
 git-show-branch
 git-show-index
-git-show-rev-cache
 git-ssh-fetch
 git-ssh-upload
 git-status

Documentation/git-update-server-info.txt

@@ -38,8 +38,6 @@ of what they are for:
 
 * info/refs
 
-* info/rev-cache
-
 
 BUGS
 ----

Documentation/git.txt

@@ -359,9 +359,6 @@ link:git-tag.html[git-tag]::
 
 Interrogators:
 
-link:git-build-rev-cache.html[git-build-rev-cache]::
-	Create or update a rev-cache file.
-
 link:git-cherry.html[git-cherry]::
 	Find commits not merged upstream.
 
@@ -402,9 +399,6 @@ link:git-send-email.html[git-send-email]::
 	Send patch e-mails out of "format-patch --mbox" output.
 	Previously this command was known as git-send-email-script.
 
-link:git-show-rev-cache.html[git-show-rev-cache]::
-	Show the contents of a rev-cache file.
-
 link:git-stripspace.html[git-stripspace]::
 	Filter out empty lines.
 

Documentation/repository-layout.txt

@@ -117,13 +117,6 @@ info/grafts::
 	listing their 40-byte hexadecimal object names separated
 	by a space and terminated by a newline.
 
-info/rev-cache::
-	No higher-level tool currently takes advantage of this
-	file, but it is generated when `git update-server-info`
-	is run.  It records the commit ancestry information of
-	the commits in this repository in a concise binary
-	format, and can be read with `git-show-rev-cache`.
-
 info/exclude::
 	This file, by convention among Porcelains, stores the
 	exclude pattern list.  `git status` looks at it, but

Makefile

@@ -92,7 +92,7 @@ SIMPLE_PROGRAMS = \
 
 # ... and all the rest
 PROGRAMS = \
-	git-apply git-build-rev-cache git-cat-file \
+	git-apply git-cat-file \
 	git-checkout-index git-clone-pack git-commit-tree \
 	git-convert-objects git-diff-files \
 	git-diff-helper git-diff-index git-diff-stages \
@@ -103,7 +103,7 @@ PROGRAMS = \
 	git-peek-remote git-prune-packed git-read-tree \
 	git-receive-pack git-rev-list git-rev-parse \
 	git-rev-tree git-send-pack git-show-branch \
-	git-show-index git-show-rev-cache git-ssh-fetch \
+	git-show-index git-ssh-fetch \
 	git-ssh-upload git-tar-tree git-unpack-file \
 	git-unpack-objects git-update-index git-update-server-info \
 	git-upload-pack git-verify-pack git-write-tree \
@@ -125,7 +125,7 @@ LIB_FILE=libgit.a
 LIB_H = \
 	blob.h cache.h commit.h count-delta.h csum-file.h delta.h \
 	diff.h epoch.h object.h pack.h pkt-line.h quote.h refs.h \
-	rev-cache.h run-command.h strbuf.h tag.h tree.h
+	run-command.h strbuf.h tag.h tree.h
 
 DIFF_OBJS = \
 	diff.o diffcore-break.o diffcore-order.o diffcore-pathspec.o \
@@ -135,7 +135,7 @@ LIB_OBJS = \
 	blob.o commit.o connect.o count-delta.o csum-file.o \
 	date.o diff-delta.o entry.o ident.o index.o \
 	object.o pack-check.o patch-delta.o path.o pkt-line.o \
-	quote.o read-cache.o refs.o rev-cache.o run-command.o \
+	quote.o read-cache.o refs.o run-command.o \
 	server-info.o setup.o sha1_file.o sha1_name.o strbuf.o \
 	tag.o tree.o usage.o $(DIFF_OBJS)