Fixed problem with Innobase and signals on Solaris

Docs/manual.texi:
  Added information about \Z
innobase/os/os0file.c:
  Fixed problem with signals on Solaris
sql/ha_innobase.cc:
  Removed not needed sign()

Docs/manual.texi

@@ -13529,36 +13529,44 @@ character}.  @strong{MySQL} recognizes the following escape sequences:
 @item \0
 An ASCII 0 (@code{NUL}) character.
 
+@findex \' (single quote)
+@findex single quote (\')
+@item \'
+A single quote (@samp{'}) character.
+
+@findex \" (double quote)
+@findex double quote (\")
+@item \"
+A double quote (@samp{"}) character.
+
+@findex \b (backspace)
+@findex backspace (\b)
+@item \b
+A backspace character.
+
 @findex \n (newline)
 @findex newline (\n)
 @item \n
 A newline character.
 
-@findex \t (tab)
-@findex tab (\t)
-@item \t
-A tab character.
-
 @findex \r (carriage return)
 @findex return (\r)
 @findex carriage return (\r)
 @item \r
 A carriage return character.
 
-@findex \b (backspace)
-@findex backspace (\b)
-@item \b
-A backspace character.
-
-@findex \' (single quote)
-@findex single quote (\')
-@item \'
-A single quote (@samp{'}) character.
+@findex \t (tab)
+@findex tab (\t)
+@item \t
+A tab character.
 
-@findex \" (double quote)
-@findex double quote (\")
-@item \"
-A double quote (@samp{"}) character.
+@findex \z (Control-Z) ASCII(26)
+@findex (Control-Z) \z
+@item \z
+ASCII(26) (Control-Z).  This character can be encoded to allow you to
+go around the problem that ASCII(26) stands for END-OF-FILE on windows.
+(ASCII(26) will cause problems if you try to use
+@code{mysql database < filename}).
 
 @findex \\ (escape)
 @findex escape (\\)
@@ -37258,10 +37266,12 @@ None.
 
 You should use @code{mysql_real_escape_string()} instead!
 
-This is identical to @code{mysql_real_escape_string()} except that it takes
-the connection as the first argument. @code{mysql_real_escape_string()}
-will escape the string according to the current character set while @code{mysql_escape_string()}
-does not respect the current charset setting.
+This is identical to @code{mysql_real_escape_string()} except that it
+takes the connection as the first
+argument. @code{mysql_real_escape_string()} will escape the string
+according to the current character set while
+@code{mysql_escape_string()} does not respect the current charset
+setting.
 
 @findex @code{mysql_fetch_field()}
 @node mysql_fetch_field, mysql_fetch_fields, mysql_escape_string, C API functions
@@ -38365,12 +38375,14 @@ try reconnecting to the server before giving up.
 
 @subsubheading Description
 
-Encodes the string in @code{from} to an escaped SQL string, taking into
-account the current charset of the connection, that can be sent to the
-server in a SQL statement, places the result in @code{to}, and adds a
-terminating null byte.  Characters encoded are @code{NUL} (ASCII 0),
-@samp{\n}, @samp{\r}, @samp{\}, @samp{'}, @samp{"}, and Control-Z
-(@pxref{Literals}).
+This function is used to create a legal SQL string that you can use in a
+SQL statement. @xref{String syntax}.
+
+The string in @code{from} is encoded to an escaped SQL string, taking
+into account the current character set of the connection. The result is placed
+in @code{to} and a terminating null byte is appended.  Characters
+encoded are @code{NUL} (ASCII 0), @samp{\n}, @samp{\r}, @samp{\},
+@samp{'}, @samp{"}, and Control-Z (@pxref{Literals}).
 
 The string pointed to by @code{from} must be @code{length} bytes long.  You
 must allocate the @code{to} buffer to be at least @code{length*2+1} bytes
@@ -42413,6 +42425,9 @@ of connections in a short time).
 Don't free the key cache on @code{FLUSH TABLES} as this will cause problems
 with temporary tables.
 @item
+Fixed problem in Innobase with with other character sets than latin1 and
+alarms on Solaris.
+@item
 Fixed a core-dump bug when using very complex query involving
 @code{DISTINCT} and summary functions.
 @item

innobase/os/os0file.c

@@ -905,7 +905,7 @@ os_aio_init(
 		os_aio_segment_wait_events[i] = os_event_create(NULL);
 	}
 
-#ifdef POSIX_ASYNC_IO
+#if defined(POSIX_ASYNC_IO) && defined(NOT_USED_WITH_MYSQL)
 	/* Block aio signals from the current thread and its children:
 	for this to work, the current thread must be the first created
 	in the database, so that all its children will inherit its

sql/ha_innobase.cc

@@ -930,13 +930,7 @@ innobase_mysql_cmp(
 	case FIELD_TYPE_VAR_STRING:
                 ret = my_sortncmp((const char*) a, a_length,
                                   (const char*) b, b_length);
-                if (ret < 0) {
-                  return(-1);
-                } else if (ret > 0) {
-                  return(1);
-                } else {
-                  return(0);
-                }
+                return ret;
 	default:
 		assert(0);
 	}