Merge changes.

Build-tools/Do-compile:
  Change already present in 5.0
configure.in:
  Do not propagate a 4.0 version number to the 5.0 tree.
include/my_sys.h:
  Change already present in 5.0.
mysys/hash.c:
  For Sun compilers, 'static inline' is ok.
mysys/my_bitmap.c:
  Change already present in 5.0
sql/item_strfunc.cc:
  Change already present in 5.0
sql/net_serv.cc:
  Change already present in 5.0

mysys/hash.c

@@ -175,7 +175,7 @@ static uint hash_rec_mask(HASH *hash,HASH_LINK *pos,uint buffmax,
 
 /* for compilers which can not handle inline */
 static
-#if !defined(__SUNPRO_C) && !defined(__USLC__) && !defined(__sgi)
+#if !defined(__USLC__) && !defined(__sgi)
 inline
 #endif
 unsigned int rec_hashnr(HASH *hash,const byte *record)