[warning control] New #pragma GCC diagnostic

[Gabriel Dos Reis]

On Fri, 20 Jan 2006, DJ Delorie wrote:

|
| > * Have -Werror act like a -Werror=* wildcard.
|
| First one.  I didn't preset the classify_diagnostics[] array because
| that interferes with the -Werror= options, as they're handled in the
| order they're encountered.  But, -Werror uses the kind-changing logic
| that -Werror= uses, resulting in consistent diagnostics (i.e. errors
| always say "error:", warnings always say "warning:").

OK.

Thanks!