Untested changes in CVS

[Simon Waters]

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Hi,

have finally committed some M4 macro changes, and related files
to CVS.

These should;

1. Substitute getopt_long if it isn't in libc (it is part of GNU
libc).

2. Supply compiler and linker options for Posix threads on
non-GNU platforms.

3. Create an unsigned integer type for 64 bits on platforms
without stdint.h. Previously a hack was made to ac_need_stdint_h
macro, but this time I used the newer ac_create_stdint_h macro.

However testing these non-GNU platforms is a mite difficult as I
don't have access to any that don't belong to clients. If you
have any to hand with a suitable C compiler, I would appreciate
knowing if this resolves the outstanding build issues.

Specific problems reported by Anders affect Solaris, and AIX.

I will test Cygwin soon.

"./configure ; make ; make install" should work everywhere -
well that is the goal.

        Thanks,

        Simon
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