Show time since last change on index page

When creating the index page, an optional file can be scanned per repository
to obtain a timestamp for last modification within the repo. If such a file
cannot be found, st_mtime for repo.defbranch is used instead.

This information is then printed in a new column, "Idle", using the new
function cgit_print_age().

The new parameter "repo.agefile" can be used to specify (globally) a relative
path to scan (default value is "info/web/last-modified").

The content of the "last-modified" file can be generated by the post-receive
hook with a command like this:

	git-for-each-ref --format="%(committerdate)" --sort=-committerdate \
	--count=1 > $GIT_DIR/info/web/last-modified

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/shared.c b/shared.c
index 65af11a..ce3ca4f 100644
--- a/shared.c
+++ b/shared.c
@@ -18,6 +18,7 @@ char *cgit_logo         = "/git-logo.png";
 char *cgit_index_header = NULL;
 char *cgit_logo_link    = "http://www.kernel.org/pub/software/scm/git/docs/";
 char *cgit_module_link  = "./?repo=%s&page=commit&id=%s";
+char *cgit_agefile      = "info/web/last-modified";
 char *cgit_virtual_root = NULL;
 char *cgit_script_name  = CGIT_SCRIPT_NAME;
 char *cgit_cache_root   = "/var/cache/cgit";
@@ -162,6 +163,8 @@ void cgit_global_config_cb(const char *name, const char *value)
 		cgit_max_repodesc_len = atoi(value);
 	else if (!strcmp(name, "max-commit-count"))
 		cgit_max_commit_count = atoi(value);
+	else if (!strcmp(name, "agefile"))
+		cgit_agefile = xstrdup(value);
 	else if (!strcmp(name, "repo.group"))
 		cgit_repo_group = xstrdup(value);
 	else if (!strcmp(name, "repo.url"))