New locale monetary conversions from POSIX 1003.1-2008

Originally from pelikan@
They aren't needed, so why do I have them?
Fix miniperl build and don't re-build it

It seems we weren't actually building miniperl.  Nothing depended on it.

This isn't a huge deal as it gets built properly later, but on alpha we
need the -fno-tree-ter CFLAGS and that made me figure out we weren't
actually doing this build.
Add CPPFLAGS and CFLAGS to the other builds

unnecessary but I think it should use them.
Don't try to install the GDBM_File man page

We don't install the module (as we don't support it) so have no need for
the docs.  Trying just confuses the installer.
Try harder to clean up the old dir

Because annoyingly we didn't have permission the other order.  Not
really sure how it ever worked for me.
Finish writing to the log before starting a new one

Because otherwise the timestamp gets rewritten and it is harder to
see which log is what.
Provide a way to disable the auto-rebuild without patches

Because the auto build is nice, but sometimes you want to see why it
failed.
Add some documentation for the varibles that control the scripts

Because there wasn't any.