Log Message:
The "libgcc_eh not found" was just buildlink lossage, not
gcc3's fault. Worse, programs got built against the wrong
(main tree) libgcc.
Now that this is fixed, set a netbsdelf2.0 target on -current,
to get both thread support and crt*.o files.
Also, use the usual buildlink magic to avoid picking up
a GNU pth from /usr/pkg.
pkgsrc/mail/imap-uw builds with a gcc3 set up this way.