* configure.in (@machine_incs@): always use
`-I$(top_srcdir)/sysdeps/@sysdeps_dir@'; it's no
longer conditional.
* examples/Makefile.am: removed the '_linux' examples.
* src/server/main.c: we now use the '__p' functions,
but only if the appropriate 'GLIBTOP_SUID_<feature>'
has a non-zero value.