bootstrap/5485: Document 64-bit bootstrap using 32-bit compiler {sparc,hppa}64

[rodrigc@gcc.gnu.org]

Synopsis: Document 64-bit bootstrap using 32-bit compiler {sparc,hppa}64

State-Changed-From-To: open->feedback
State-Changed-By: rodrigc
State-Changed-When: Sun Jan 27 14:57:03 2002
State-Changed-Why:
    Can you submit a patch to invoke.texi which has
    the correct bootstrap instuctions for 64-bit sparc/hppa?

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=5485