Made FDB experiment permanent and bumped to version 0.51.5

lib/dbfdb.c

@@ -34,8 +34,6 @@
 #include "mbsedb.h"
 
 
-#ifdef	USE_EXPERIMENT
-
 
 
 /*
@@ -577,4 +575,3 @@ int mbsedb_SortFDB(struct _fdbarea *fdb_area)
 }
 
 
-#endif

lib/mbsedb.h

@@ -132,7 +132,6 @@ int     SearchNetBoard(unsigned short, unsigned short); /* Search netmail   */
 void    UpdateMsgs(void);               /* Update current messages record   */
 
 
-#ifdef  USE_EXPERIMENT
 
 /*
  * Structure of current open file area
@@ -152,8 +151,5 @@ int mbsedb_InsertFDB(struct _fdbarea *, struct FILE_record, int);
 int mbsedb_PackFDB(struct _fdbarea *);
 int mbsedb_SortFDB(struct _fdbarea *);
 
-#endif
-
-
 
 #endif