* acinclude.m4 (AC_LC_SYSDEPS): rewrote that macro -
moved some of the code to 'macros/gnome-libgtop-sysdeps.m4';
renamed variables: look at the ChangeLog entry for the
new 'libgtopConf.sh.in' for details.
* acinclude.m4 (AC_LC_SYSDEPS): define 'GLIBTOP_NAMES' when
building libgtop and a new conditional 'GLIBTOP_NAMES'; added
new parameter '--without-examples'; define 'GLIBTOP_EXAMPLES'
and conditional 'GLIBTOP_EXAMPLES'.
* acinclude.m4 (AC_LC_SYSDEPS): added 'machine_incs'
which is used in 'INCLUDES' in several 'Makefile.am's;
fixed typo 'ac_cv_want_names'; added missing AC_SUBST
of 'use_glibtop_machine_h'.