There is no point in intentionally disabling this feature; it
isn't enabled by default by the compiler - and if it were to be
enabled by default (if the toolchain baseline includes it, because
it can be expected to be supported everywhere) there would be no
reason to disable it.
Change-Id: I67019eea63c4fb7183d9e47cf16bc8485022fef2
If the environment already indicates that the compiler targets
either x86 or x86_64, we don't need to enforce this by trying to
force the compiler to output a specific bitness.
Change-Id: Ife6e717e90b4da4edd852dcd66ad92dba70939a2
