+CONSTANTS
+ "I_THREADSAFE"
+ True iff the module could have been built when thread-safety features.
+
+CAVEATS
+ "meth $obj" (no semicolon) at the end of a file won't be seen as an
+ indirect object syntax, although it will as soon as there is another
+ token before the end (as in "meth $obj;" or "meth $obj 1").
+
+ With 5.8 perls, the pragma does not propagate into "eval STRING". This
+ is due to a shortcoming in the way perl handles the hints hash, which is
+ addressed in perl 5.10.
+