* -CSD does not affect modules, so readfile() was not using the utf-8 input
layer, which led to lots of problems; make it force read files as utf-8.
Closes: #373203
+ * Note that as a consequence, this version of ikiwiki will actually try to
+ parse utf8 in source files for the first time, which may expose broken
+ utf8 in wiki sources that was hidden before. Most common will be
+ perl warnings like "utf8 "\xE9" does not map to Unicode"
* writefile() likewise needs to use the utf8 output layer.
* Remove the -CSD from ikiwiki's hashbang since it's useless to have it
there.