In gcc/:
* doc/invoke.texi (-fno-nil-receivers): Tidied up line to remove
underfull hbox in DVI output.
(-fobjc-class-cxx-cdtors): Same change.
(-fobjc-exceptions): Tidied up documentation. Explain what the
option does, but moved the (lenghty) description of the exception
syntax into objc.texi.
(-fobjc-gc): Explain that the option is not useful with the GNU
runtime.
(-fzero-link): Explain that the GNU runtime always works in
"zero-link" mode.
* doc/objc.texi: All sections: simplified @node declarations
removing specification of next, previous, up node.
(Objective-C): Updated introduction.
(Garbage Collection): Updated. The bohem-gc library is now
included in gcc itself. Mention that this section only applies to
the GNU Objective-C runtime.
(compatibility_alias): Small tidy up.
(Exceptions): New section mostly containing text previously in the
description of the -fobjc-exception command-line option.
(Synchronization): Same.
From-SVN: r164586