This patch fixes VSYSCALL_BASE/FIXADDR_TOP relations problems
in 4gb split kernels (under some combinations of options/patches):
- if FIXADDR_TOP is changed, VSYSCALL_BASE in vsyscall.lds should be
   changed as well
- original 4gb split changes FIXADDR_TOP to be sure that stack
   is 2 pages aligned, but vsyscall.lds uses hardcoded constants inside.
   So we had /sbin/init loading problems due to ld-linux.so trying to
   access wrong addresses in VSYSCALL page.

The fix is the aligment of 4gb pages instead of alignment of FIXADDR_TOP

Signed-Off-By: Kirill Korotaev <dev@sw.ru>

Kirill

P.S. These 4GB split patches are against modified 2.6.8.1 kernel, but 
should be appliable to last Fedora kernels