RFC - Remove support for PCH post 4.8

[Diego Novillo]

On Tue, Nov 27, 2012 at 2:48 PM, Paolo Carlini <paolo.carlini@oracle.com> wrote:

> Assuming that the new implementation will be available in time for 4.9, my
> primary concern is that in the meanwhile running the libstdc++ testsuite
> will be quite noticeably slower. Do you have some numbers?

No, but I can get them.  How do I disable PCH for libstdc++?


Diego.