Configure: AIX needs a specific DSO extension function
DSO extensions are normally derived from platform->shlibextsimple() on
Unix.  This isn't the case for AIX, so it needs to define its own DSO
extension specifically.
@@ -12,6 +12,7 @@ require platform::Unix;
# Assume someone set @INC right before loading this module
use configdata;
+sub dsoext { '.so' }
sub shlibextsimple { '.a' }
# In shared mode, the default static library names clashes with the final
