Add missing 'static' to game-internal declarations.

Another thing I spotted while trawling the whole source base was that
a couple of games had omitted 'static' on a lot of their internal
functions. Checking with nm, there turned out to be quite a few more
than I'd spotted by eye, so this should fix them all.

Also added one missing 'const', on the lookup table nbits[] in Tracks.

1 files changed, 2 insertions, 2 deletions

diff --git a/galaxies.c b/galaxies.c
index e871e21..0cc3198 100644
--- a/galaxies.c
+++ b/galaxies.c
@@ -49,7 +49,7 @@
 #ifdef DEBUGGING
 #define solvep debug
 #else
-bool solver_show_working;
+static bool solver_show_working;
 #define solvep(x) do { if (solver_show_working) { printf x; } } while(0)
 #endif
 
@@ -1605,7 +1605,7 @@ static game_state *new_game(midend *me, const game_params *params,
  * Solver and all its little wizards.
  */
 
-int solver_recurse_depth;
+static int solver_recurse_depth;
 
 typedef struct solver_ctx {
     game_state *state;