[v3] speedup numpunct cache a bit

[Nathan Myers]

On Fri, Jun 27, 2003 at 10:38:02PM -0400, Jerry Quinn wrote:
> This moves the code for __use_cache<numpunct> to locale_facets.tcc.
> It shaves about 2% off testsuite/performance/ofstream_insert_float.cc
> from 4.15s down to 4.0s.  gcc 2.95 gives 3.6s at -O2, so we're getting
> closer.

Making it inline is a wondrous thing, but all inlines must go in 
".h" files.  Everything in a .tcc file is supposed to be able to 
be declared "export" and not need to be seen at instantiation time, 
meaning (mainly) no public class declarations and no inlines.

This might not have been explained anywhere that you would have 
been likely to encounter.

Nathan Myers
ncm-nospam@cantrip.org