[vta, trunk?] enable bootstrap with BUILD_CONFIG=bootstrap-O3

[Alexandre Oliva]

Bootstrapping on x86-linux-gnu (not sure 32 or 64 any more, probably
both) fails because of -Werror on these two files, because functions get
inlined and expose paths in which the compiler can't determine that
variables or their fields are initialized before they're referenced.

I'm installing this in the branch.  Is this ok for the trunk?

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-- 
Alexandre Oliva, freedom fighter    http://FSFLA.org/~lxoliva/
You must be the change you wish to see in the world. -- Gandhi
Be Free! -- http://FSFLA.org/   FSF Latin America board member
Free Software Evangelist      Red Hat Brazil Compiler Engineer