+CONSTANTS
+ "A_THREADSAFE"
+ True iff the module could have been built with thread-safety features
+ enabled. This constant only has a meaning with your perl is threaded ;
+ otherwise, it'll always be false.
+
+ "A_FORKSAFE"
+ True iff this module could have been built with fork-safety features
+ enabled. This will always be true except on Windows where it's false for
+ perl 5.10.0 and below .
+