merge with 3.23.49

BitKeeper/etc/logging_ok:
  auto-union
acconfig.h:
  Auto merged
Docs/manual.texi:
  Auto merged
client/client_priv.h:
  Auto merged
include/mysql.h:
  Auto merged
innobase/dict/dict0dict.c:
  Auto merged
innobase/row/row0mysql.c:
  Auto merged
mysql-test/t/comments.test:
  Auto merged
sql/sql_lex.cc:
  Auto merged
sql/sql_load.cc:
  Auto merged
sql/sql_parse.cc:
  Auto merged
sql/unireg.cc:
  Auto merged
sql/unireg.h:
  Auto merged

configure.in

@@ -518,7 +518,7 @@ AC_ARG_ENABLE(thread-safe-client,
     [ THREAD_SAFE_CLIENT=no ]
     )
 
-# Make thread safe client
+# compile with strings functions in assembler
 AC_ARG_ENABLE(assembler,
     [  --enable-assembler      Use assembler versions of some string 
                           functions if available.],
@@ -583,6 +583,14 @@ AC_ARG_WITH(mysqld-user,
     )
 AC_SUBST(MYSQLD_USER)
 
+# compile with strings functions in assembler
+AC_ARG_ENABLE(local-infile,
+    [  --enable-local-infile
+                          If LOAD DATA LOCAL INFILE is enabled by default.],
+    [ ENABLED_LOCAL_INFILE=$enablewal ],
+    [ ENABLED_LOCAL_INFILE=no ]
+    )
+
 # Use Paul Eggerts macros from GNU tar to check for large file support.
 MYSQL_SYS_LARGEFILE