Fix too many PROPFIND when starting a sync

csync would not update the etag (md5) for directoru in the database if
the etag has changed, but none of the files within that directory
actually changed

src/csync_private.h

@@ -179,6 +179,7 @@ struct csync_file_stat_s {
   int nlink;        /* u32 */
   int type;         /* u32 */
   int child_modified;/*bool*/
+  int should_update_md5; /*bool */
 
   char *destpath;   /* for renames */
   const char *md5;

src/csync_update.c

@@ -542,8 +542,10 @@ int csync_ftw(CSYNC *ctx, const char *uri, csync_walker_fn fn,
       }
 
       if (ctx->current_fs && !ctx->current_fs->child_modified
-          && ctx->current_fs->instruction == CSYNC_INSTRUCTION_EVAL)
+          && ctx->current_fs->instruction == CSYNC_INSTRUCTION_EVAL) {
         ctx->current_fs->instruction = CSYNC_INSTRUCTION_NONE;
+        ctx->current_fs->should_update_md5 = true;
+      }
     }
     ctx->current_fs = previous_fs;
     SAFE_FREE(filename);

src/csync_util.c

@@ -120,7 +120,7 @@ static int _merge_file_trees_visitor(void *obj, void *data) {
   ctx = (CSYNC *) data;
 
   /* search for UPDATED file */
-  if (fs->instruction != CSYNC_INSTRUCTION_UPDATED) {
+  if (fs->instruction != CSYNC_INSTRUCTION_UPDATED && !fs->should_update_md5) {
     rc = 0;
     goto out;
   }