Replace more non-codeblocks with outputblocks.

Author: Eelis

source/iostreams.tex

@@ -16847,16 +16847,16 @@
 \pnum
 \begin{example}
 Given this directory structure:
-\begin{codeblock}
+\begin{outputblock}
 /dir1
   file1
   file2
   dir2
     file3
-\end{codeblock}
+\end{outputblock}
 
 Calling \tcode{copy("/dir1", "/dir3")} would result in:
-\begin{codeblock}
+\begin{outputblock}
 /dir1
   file1
   file2
@@ -16865,10 +16865,10 @@
 /dir3
   file1
   file2
-\end{codeblock}
+\end{outputblock}
 
 Alternatively, calling \tcode{copy("/dir1", "/dir3", copy_options::recursive)} would result in:
-\begin{codeblock}
+\begin{outputblock}
 /dir1
   file1
   file2
@@ -16879,7 +16879,7 @@
   file2
   dir2
     file3
-\end{codeblock}
+\end{outputblock}
 \end{example}
 \end{itemdescr}
 

source/regex.tex

@@ -3862,7 +3862,7 @@
 \tcode{upper}, \tcode{xdigit}, \tcode{d}, \tcode{s}, \tcode{w}.
 In addition the following expressions shall be equivalent:
 
-\begin{codeblock}
+\begin{outputblock}
 \d @\textnormal{and}@ [[:digit:]]
 
 \D @\textnormal{and}@ [^[:digit:]]
@@ -3874,7 +3874,7 @@
 \w @\textnormal{and}@ [_[:alnum:]]
 
 \W @\textnormal{and}@ [^_[:alnum:]]
-\end{codeblock}
+\end{outputblock}
 
 \pnum
 \indexlibrary{regular expression traits!\idxcode{lookup_collatename}}%

source/uax31.tex

@@ -34,11 +34,11 @@
 the \tcode{<Medial>} set is empty, and
 the \tcode{<Continue>} characters are unmodified.
 In the grammar used in \UAX{31}, this is
-\begin{codeblock}
+\begin{outputblock}
 <Identifier> := <Start> <Continue>*
 <Start> := XID_Start + @\textrm{\ucode{005f}}@
 <Continue> := <Start> + XID_Continue
-\end{codeblock}
+\end{outputblock}
 
 \pnum
 This is described in the \Cpp{} grammar in \ref{lex.name},