gengtype-lex.c and other generated files polluting srcdir

[Dara Hazeghi]

Hello,

as recently seen in PR 10740, certain generated files end up in the 
srcdir, and can cause things to break in a fairly unintuitive manner. 
Would it be possible to make sure that such generated files from cvs 
builds get put into the objdir, where they seem to belong? Or will this 
cause to much of a problem differentiating between cvs builds and 
release builds?
The files  in question (noticed so far) are:
gengtype-lex.c
gengtype-yacc.c

and some of the Ada .info files.

Thanks,

Dara