Dynamically use the 32-bit dump_syms for files when needed
Dynamically use the 32-bit dump_syms for files when needed

'dump_syms' was recently changed to be built 64-bit, with a 32-bit version
available as 'dump_syms.32'.  This change makes use of the 32b dump_syms if
a file is built 32b.  For almost all targets nowadays, we should only see
64b files, but things like the installer can still be 32b.  Also see
https://gerrit.chromium.org/gerrit/14835.

BUG=chromium-os:22778
TEST=Ran cros_generate_breakpad_symbols on 32/64-bit executables
CQ-DEPEND=I6551fe22fb0caebd3584f76f95a543e9a91b7e1b

Change-Id: I780c20eeb745a919dbe130cf3cede7ec5ca6483a
Reviewed-on: https://gerrit.chromium.org/gerrit/18569
Commit-Ready: Michael Krebs <d6638659c20694b0807ba6fa35ee0bac2e482e0f@chromium.org>
Tested-by: Michael Krebs <d6638659c20694b0807ba6fa35ee0bac2e482e0f@chromium.org>
Reviewed-by: David James <f231dc574bbeb62604660cbc162d1b8642a0a3af@chromium.org>

trnubo/scripts,vmware/coreos-scripts,coreos/scripts,smilart/scripts,bcwaldon/coreos-scripts,marineam/coreos-scripts,endocode/scripts,crawford/scripts,nicescale/scripts,crawford/scripts,nicescale/scripts,mjg59/scripts,smilart/scripts,crawford/scripts,BugRoger/scripts,sigma/coreos-scripts,fivethreeo/scripts,trnubo/scripts,mischief/scripts,mjg59/scripts,marineam/coreos-scripts,nicescale/scripts,BugRoger/scripts,fivethreeo/scripts,BugRoger/scripts,mischief/scripts,gtank/scripts,bcwaldon/coreos-scripts,marineam/coreos-scripts,andrejro/coreos--scripts,trnubo/scripts,sigma/coreos-scripts,zhang0137/scripts,endocode/scripts,glevand/coreos--scripts,glevand/coreos--scripts,vmware/coreos-scripts,gtank/scripts,fivethreeo/scripts,andrejro/coreos--scripts,mischief/scripts,gtank/scripts,andrejro/coreos--scripts,bcwaldon/coreos-scripts,sigma/coreos-scripts,zhang0137/scripts,smilart/scripts,endocode/scripts,zhang0137/scripts,vmware/coreos-scripts,mjg59/scripts,coreos/scripts