*) Platform was no longer recognized as a attribute of Options. Used waf
Utils call to obtain unversioned platform name.
*) Task classes renamed from <taskname>_task to <taskname>.
Waf was not finding the classes when named with _task suffix.
*) Waf removed check option for 'type_name' check.
Added explicit embedded code snippet based on previous Waf versions to perform uint128 checks.
*) Waf source attribute is now strings, need to convert to nodes to retrieve parent node.
# Orig 1.8.19 testdir = self.source[-1].parent.path_from(self.bld.srcnode)
testdir = self.to_nodes(self.source[-1])[0].parent.path_from(self.bld.srcnode)
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