(re-)enable compilation with automake < 1.9 which does not support option "tar-ustar", yet;
(re-)enable compilation with automake < 1.9
which does not support option "tar-ustar", yet;

otherwise, we loose testing on / support for
 - MacOS X 10.4 (Darwin 8.9.0)
 - Solaris 10 (SunOS 5.10) (on x86)

zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb