rest of work to convert unwind-protects to ANSI/ISO C; size_t updates; function prototype changes for ANSI/ISO C

doc/bash.1

@@ -7957,7 +7957,7 @@ The return value is 0 unless the shell is not executing a subroutine
 call or \fIexpr\fP does not correspond to a valid position in the
 call stack.
 .TP
-\fBcd\fP [\fB\-L\fP|[\fB\-P\fP [\fB\-e\fP]] [\-@]] [\fIdir\fP]
+\fBcd\fP [\fB\-L\fP|[\fB\-P\fP [\fB\-e\fP]]] [\-@] [\fIdir\fP]
 Change the current directory to \fIdir\fP.
 if \fIdir\fP is not supplied, the value of the
 .SM

doc/bashref.texi

@@ -3816,7 +3816,7 @@ The return status is zero unless @var{n} is not greater than or equal to 1.
 @item cd
 @btindex cd
 @example
-cd [-L|[-P [-e]] [-@@] [@var{directory}]
+cd [-L|[-P [-e]]] [-@@] [@var{directory}]
 @end example
 
 Change the current working directory to @var{directory}.