libintl glitches in XS

[Hans-Bernhard Bröker]

Hello one and all,

after running into failures on Cygwin for a while, I decided to
investigate a bit deeper to see what was keeping things from working,
and found a few suspicious aspects.

*) I had to add $(LIBINTL) to Parsetexi_la_LIBADD, or it wouldn't manage
to build Parsetexi.la.  This may be partly due to Cygwin's variant of
shared library, unlike the Linux kind, requiring to be fully covered,
i.e. they cannot have undefined references inside.  It feels like
something similar should be done with $(LTLIBINTL) and $(LIBICONV), too.
 Either that, or $(LTLIBICONF) should be in ..._LIBADD, not ..._LDFLAGS.


*) I'm seeing quite a few `$p' in Makefile.am.  I'm pretty sure these
really should be `$(p)' instead.

Hans-Bernhard Broeker