Modify gcc for use with gdb (issue5132047)

[Jakub Jelinek]

On Mon, Sep 26, 2011 at 03:05:00PM -0700, Lawrence Crowl wrote:
> There a non-transparent change in behavior that may affect some users.
> The inline functions will introduce additional lines in a sequence of
> gdb 'step' commands.  Use 'next' instead.

That is IMHO a serious obstackle.  If anything, the inlines should
use always_inline, artificial attributes, but don't know if GDB treats them
already specially and doesn't step into them with step.
Also, I'm afraid it will significantly grow cc1plus/cc1 debug info.

The .gdbinit macro redefinition Paolo posted sounds to be a better approach.

	Jakub