Update glibc revision in tools/REVISIONS (9b15f6a->150657d)
Update glibc revision in tools/REVISIONS (9b15f6a->150657d)

This brings in:
150657d  Add truncate.c to list of nacl files overrides.

This change also disables tst-truncate and tst-truncate64
which were previously auto-disabled since they included
a linker warning but now fail because they test both
truncate (which works) and ftruncate (which doesn't).

ftruncate fails with 'Function not implemented' but doesn't
trigger the linker warning.

BUG= https://code.google.com/p/nativeclient/issues/detail?id=3583
TEST= toolchain trybots
NOTRY=true

Review URL: https://codereview.chromium.org/470193003

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@13638 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client