Bug#454266: upgrade to 2.7 fails, leaving system unusable

[Marcus Better <marcus@better.se>]

Should these files really be on my system if I don't have libc6-i686?

~$ ls /lib/i686/cmov/
ld-2.6.1.so               libmemusage.so           libnss_nis.so.2@
ld-linux.so.2@            libm.so.6@               libpcprofile.so
libanl-2.6.1.so           libnsl-2.6.1.so          libpthread-2.6.1.so
libanl.so.1@              libnsl.so.1@             libpthread.so.0@
libBrokenLocale-2.6.1.so  libnss_compat-2.6.1.so   libresolv-2.6.1.so
libBrokenLocale.so.1@     libnss_compat.so.2@      libresolv.so.2@
libc-2.6.1.so             libnss_dns-2.6.1.so      librt-2.6.1.so
libcidn-2.6.1.so          libnss_dns.so.2@         librt.so.1@
libcidn.so.1@             libnss_files-2.6.1.so    libSegFault.so
libcrypt-2.6.1.so         libnss_files.so.2@       libthread_db-1.0.so
libcrypt.so.1@            libnss_hesiod-2.6.1.so   libthread_db.so.1@
libc.so.6@                libnss_hesiod.so.2@      libutil-2.6.1.so
libdl-2.6.1.so            libnss_nis-2.6.1.so      libutil.so.1@
libdl.so.2@               libnss_nisplus-2.6.1.so
libm-2.6.1.so             libnss_nisplus.so.2@