* [48cc748]->[a5f8483] intprops: TYPE_IS_INTEGER, TYPE_SIGNED not integer constant exprs
* [8cc0fee]->[8c5e817] intprops: work around C compiler bugs
+ * [92c71a1]->[2dd0ce3] intprops: work around IRIX 6.5 cc bug with 0u - 0u + -1
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