[PATCH] revise GAS description of local symbols

[Nick Clifton]

Hi Bob,

> gas/
>         * doc/as.texinfo (Overview): Revise description of --keep-locals.
>         Add xref to "Symbol Names".
>         (L): Refer to "local symbols" instead of "local labels".  Move
>         definition to "Symbol Names" section; add xref to that section.
>         (Symbol Names): Use "Local Symbol Names" section to define local
>         symbols.  Add "Local Labels" heading for description of temporary
>         forward/backward labels, and refer to those as "local labels".

Approved - please apply.

Cheers
   Nick