* configure.in: AC_SUBST privlibdir, privincludedir, privdatadir
(sent from ../configure). Add descriptions to AC_DEFINEs. Don't
bother checking for python since we don't build it anyway.
* acconfig.h: Gone
* src/libical/Makefile.am: install library in privlibdir and
headers under privincludedir. Look for zone files in privdatadir
* src/libicalvcal/Makefile.am: install in privlibdir
* zoneinfo/Makefile.am (zoneinfodatadir): define in terms of
privdatadir
(install-data-local): update
svn path=/trunk/; revision=19823