1. On disc1, print/acroread4 for alpha and print/acroread5 for i386
replace print/acroread, which was not compatible with the linux_base
that we ship by default. Remove print/acroread4 from disc3 as
redundant.
2. www/linux-netscape47-* were removed due to security holes;
substitute www/netscape48-* on disc1.
3. Add www/opera to disc1.
Approved by: re (murray)