Added local-time option to cgitrc

When `local-time` is set, commit, tag and patch timestamps will be printed
in the servers timezone. Also, regardless of the value of `local-time`,
these timestamps will now always show the timezone.

Signed-off-by: Stefan Naewe <stefan.naewe@atlas-elektronik.com>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>

cgit.h

@@ -22,7 +22,7 @@
 /*
  * Dateformats used on misc. pages
  */
-#define FMT_LONGDATE "%Y-%m-%d %H:%M:%S"
+#define FMT_LONGDATE "%Y-%m-%d %H:%M:%S (%Z)"
 #define FMT_SHORTDATE "%Y-%m-%d"
 
 
@@ -148,6 +148,7 @@ struct cgit_config {
 	int enable_index_links;
 	int enable_log_filecount;
 	int enable_log_linecount;
+	int local_time;
 	int max_repo_count;
 	int max_commit_count;
 	int max_lock_attempts;