Updating aquaterm.trm/apple.m4

Hi,
I'm working on the next version of Aquaterm and consequently an updated 
aquaterm.trm.

The biggest change is that aquaterm.trm now relies on a library  
(libaquaterm) and I took a stab at implementing the following in 
apple.m4+term.h:
	Check for Mac OS X, if true check for the presence of libaquaterm and 
if that exists, define HAVE_LIBAQUATERM and add necessary libs.
	In term.h include aquaterm.trm if HAVE_LIBAQUATERM is defined.

I hope that this is roughly consistent with practice and will suffice 
as a starting point. I'd appreciate feedback on this, this (AC macros) 
is not my cup of tea ;-)

/Per

PS. the apple.m4 is short enough that I just paste it in for reference:

AC_DEFUN(GP_APPLE,
[AC_MSG_CHECKING(for Apple MacOS X)
AC_EGREP_CPP(yes,
[#if defined(__APPLE__) && defined(__MACH__)
   yes
#endif
], AC_MSG_RESULT(yes)
    AC_CHECK_LIB(aquaterm, aqtInit,
         AC_DEFINE(HAVE_LIBAQUATERM, 1, [ Define if AquaTerm is 
installed on this system. ])
         LIBS="$LIBS -laquaterm -framework Foundation"
         CFLAGS="$CFLAGS -ObjC",
         AC_MSG_RESULT(no), -lobjc),
    AC_MSG_RESULT(no))
])