Allow DEFAULT_DB_PAGE_SIZE to be defined at build time

CHANGES

@@ -15,6 +15,7 @@ Changes included in OpenLDAP 1.2.10 Release Engineering
 	Fixed -llber seqorset buffer overrun bug (ITS#479)
 	Build Environment
 		Do not list unsupported LDBM API option NDBM
+		Allow DEFAULT_DB_PAGE_SIZE to be defined at build time
 
 Changes included in OpenLDAP 1.2.9
 	CVS Tag: OPENLDAP_REL_ENG_1_2_9

include/ldbm.h

@@ -32,7 +32,9 @@
 #	include <db.h>
 #	ifdef HAVE_BERKELEY_DB2
 #		define R_NOOVERWRITE DB_NOOVERWRITE
-#		define DEFAULT_DB_PAGE_SIZE 1024
+#		ifndef DEFAULT_DB_PAGE_SIZE
+#			define DEFAULT_DB_PAGE_SIZE 1024
+#		endif
 #	endif
 #endif
 
@@ -90,7 +92,9 @@ LDAP_END_DECL
 #	include <db.h>
 #	ifdef LDBM_USE_DB2
 #		define R_NOOVERWRITE DB_NOOVERWRITE
-#		define DEFAULT_DB_PAGE_SIZE 1024
+#		ifndef DEFAULT_DB_PAGE_SIZE
+#			define DEFAULT_DB_PAGE_SIZE 1024
+#		endif
 #	endif
 #endif