branches/innodb+: srv0srv.c: Revert a change from branches/zip.

The variable srv_stats_sample_pages was declared ib_uint64_t in srv0srv.c
and unsigned long long in srv0srv.h.

srv/srv0srv.c

@@ -305,7 +305,7 @@ UNIV_INTERN ibool	srv_stats_on_metadata	= TRUE;
 
 /* When estimating number of different key values in an index, sample
 this many index pages */
-UNIV_INTERN ib_uint64_t	srv_stats_sample_pages = 8;
+UNIV_INTERN unsigned long long	srv_stats_sample_pages = 8;
 
 UNIV_INTERN ibool	srv_use_doublewrite_buf	= TRUE;
 UNIV_INTERN ibool	srv_use_checksums = TRUE;