Re: size increase for CVS emacs vs 21.3

[Dan Nicolaescu]

It turns out that contrary to what I previously said, the size of
"pure" can be decreased a lot, to 994000 
bytes (at least on i686-pc-linux-gnu).

The only user of the "PURESIZE" computation in puresize.h is alloc.c, so
it might be a good idea to move all those definitions to alloc.c so
that spurious recompilations are avoided when changing the size of
pure.