by disavowing any knowledge of dynaloading.
p4raw-id: //depot/perl@19802
d_setreuid='undef'
# No shared libraries.
so='none'
+# No dynaloading.
+d_dlopen='undef'
+i_dlfcn='undef'
# Threads call-back unit.
cat > UU/usethreads.cbu <<'EOCBU'
# This script UU/usethreads.cbu will get 'called-back' by Configure