fix up semantics of assigning to noassign variables; fix error message in arithmetic noeval mode; add shared memory option to anonymous files; fix static linking config in configure

doc/bashref.texi

@@ -1953,7 +1953,7 @@ command substitution.
 
 After these expansions are performed, quote characters present in the
 original word are removed unless they have been quoted themselves
-(@dfn{quote removal}).
+(@dfn{quote removal}). @xref{Quote Removal} for more details.
 
 Only brace expansion, word splitting, and filename expansion
 can increase the number of words of the expansion; other expansions
@@ -1963,9 +1963,6 @@ The only exceptions to this are the expansions of
 @code{"$@{@var{name}[@@]@}"} and @code{$@{@var{name}[*]@}}
 (@pxref{Arrays}).
 
-After all expansions, @code{quote removal} (@pxref{Quote Removal})
-is performed.
-
 @node Brace Expansion
 @subsection Brace Expansion
 @cindex brace expansion