Simplify small size class infrastructure.

Program-generate small size class tables for all valid combinations of
LG_TINY_MIN, LG_QUANTUM, and PAGE_SHIFT.  Use the appropriate table to generate
all relevant data structures, and remove the distinction between
tiny/quantum/cacheline/subpage bins.

Remove --enable-dynamic-page-shift.  This option didn't prove useful in
practice, and it prevented optimizations.

Add Tilera architecture support.

include/jemalloc/internal/ctl.h

@@ -40,7 +40,7 @@ struct ctl_arena_stats_s {
 	uint64_t		ndalloc_small;
 	uint64_t		nrequests_small;
 
-	malloc_bin_stats_t	*bstats;	/* nbins elements. */
+	malloc_bin_stats_t	bstats[NBINS];
 	malloc_large_stats_t	*lstats;	/* nlclasses elements. */
 };