Reduce dependency on travel.h

Removed inclusion of travel.h from most .h files to reduce the number
of .cc files dependant on it.  This involved moving the level_pos
declaration to externs.h, moving the flood_find template to it's own
header file, and moving two typedefs from travel.h to travel_defs.h
because typedefs can't be forward declared (argh).

1 files changed, 1 insertions, 1 deletions

diff --git a/crawl-ref/source/traps.h b/crawl-ref/source/traps.h
index c39b70482c..43285f96d7 100644
--- a/crawl-ref/source/traps.h
+++ b/crawl-ref/source/traps.h
@@ -8,7 +8,7 @@
 #define TRAPS_H
 
 #include "enum.h"
-#include "travel.h"
+#include "externs.h"
 
 struct bolt;
 class  monsters;