Revert r10512: "Update PNaCl rev to 10509 in TOOLS_REVISION."
Revert r10512: "Update PNaCl rev to 10509 in TOOLS_REVISION."

This reverts commit b648c6cc05b7d3654a24d02bc20d5541f426d69d.

The new tools rev pulled in an llc.nexe that is built with excess
halt sled padding. That padding is now being mistaken as a segment
gap, which triggers an IRT load even if that will fail.  That breaks
the FYI naclmore bots.  Revert this until PNaCl is able to
tell sel_ldr and chrome not to load the IRT more explicitly.

BUG= http://code.google.com/p/nativeclient/issues/detail?id=3241

Review URL: https://codereview.chromium.org/11759013

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@10531 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client