languages/PIR: * fix a layout thing. * remove "global" instruction * remove ":wrap" flag, which is not a PIR element * add :postcomp, as this has different semantics from :immediate, so we need both in the grammar.
languages/PIR:
* fix a layout thing.
* remove "global" instruction
* remove ":wrap" flag, which is not a PIR element
* add :postcomp, as this has different semantics from :immediate, so we need both in the grammar.

git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@21649 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

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