Drop the global variable policyvers. The variable is only used within
checkpolicy.c and checkmodule.c, but never in any shared code.
Since the variable declaration is the only content of checkpolicy.h drop
it.
Also set the policy version before calls to read_source_policy(), so the
parser can access the requested version for checks this way.
Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
Acked-by: James Carter <jwcart2@gmail.com>
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