Merge branch 'master' into sp/mmap

* master:
  Documentation/config.txt (and repo-config manpage): mark-up fix.
  Teach Git how to parse standard power of 2 suffixes.
  Use /dev/null for update hook stdin.
  Redirect update hook stdout to stderr.
  Remove unnecessary argc parameter from run_command_v.
  Automatically detect a bare git repository.
  Replace "GIT_DIR" with GIT_DIR_ENVIRONMENT.
  Use PATH_MAX constant for --bare.
  Force core.filemode to false on Cygwin.
  Fix formatting for urls section of fetch, pull, and push manpages
  Fix yet another subtle xdl_merge() bug
  i18n: drop "encoding" header in the output after re-coding.
  commit-tree: cope with different ways "utf-8" can be spelled.
  Move commit reencoding parameter parsing to revision.c
  Documentation: minor rewording for git-log and git-show pages.
  Documentation: i18n commit log message notes.
  t3900: test log --encoding=none
  commit re-encoding: fix confusion between no and default conversion.

config.c

@@ -238,6 +238,12 @@ int git_config_int(const char *name, const char *value)
 		int val = strtol(value, &end, 0);
 		if (!*end)
 			return val;
+		if (!strcasecmp(end, "k"))
+			return val * 1024;
+		if (!strcasecmp(end, "m"))
+			return val * 1024 * 1024;
+		if (!strcasecmp(end, "g"))
+			return val * 1024 * 1024 * 1024;
 	}
 	die("bad config value for '%s' in %s", name, config_file_name);
 }