_NETBSD_SOURCE always defined leading to unwanted inclusions

[tlaronde%polynum.com@localhost]

[I changed the subject because this was lost in the end of a message
about _STANDALONE]

When one does not specify something special (_ANSI_SOURCE or
_POSIX_C_SOURCE or _XOPEN_SOURCE), _NETBSD_SOURCE is always defined
due to the inclusion of sys/featuretest.h almost everywhere.

This leads to the inclusion of some chunks of code in <sys/time.h>,
specially the definition of static functions (supposed to be inlined but
this will depend on the compiler and on the flags--- -fno-inline).

A first problem (YMMV) is that <time.h> can not be included anywhere
but only outside of a block, since there are definitions and not only
declarations.

The second problem is that the functions are not prefixed by '_' and can
conflict with locally defined functions.

FWIW,
-- 
        Thierry Laronde <tlaronde +AT+ polynum +dot+ com>
                     http://www.kergis.com/
                       http://www.sbfa.fr/
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