https://bugzilla.redhat.com/show_bug.cgi?id=449245 lists two issues after updating autoconf in Fedora to 2.62.
- same line comments are now really broken where they worked before even though
this was discouraged.
The documentation should probably reflect this new behaviour if this breakage
was intentionally.
- autoconf shouldn't temper with symbols it hasn't been told to substitute.
Karsten
