Log Message:
Update to 0.20:

* lib/cli/c++/none/xmalloc.c: eliminate references to error.h and
  error(), to eliminate dependency on GNU libc.
* lib/cli/c++/none/program.cc: eliminate multi-line strings
  (thanks to Mario Lang <mlang@debian.org>)
* autoproject.in: handle error return of expr (thanks to Joachim
  Reichel <joachim.reichel@gmx.de>)