Exiv2 v0.27.1 RC1 is ready

The new failure is:
nufraw_exiv2.cc:47:37: note: ‘std::cerr’ is defined in header ‘’; did you forget to ‘#include ’?
nufraw_exiv2.cc:23:1:
+#include

nufraw_exiv2.cc:47:37:
std::streambuf *savecerr = std::cerr.rdbuf();
^~~~
nufraw_exiv2.cc:48:10: error: ‘cerr’ is not a member of ‘std’
std::cerr.rdbuf(stderror.rdbuf());
^~~~

The old failure is documented early on the nufraw thread.