Begin autotools sanitization sequence by requiring ports to explicitly
specify which version of {libtool,autoconf,automake} they need, erasing
the concept of a "system default".
For ports-in-waiting:
USE_LIBTOOL=YES -> USE_LIBTOOL_VER=13
USE_AUTOCONF=YES -> USE_AUTOCONF_VER=213
USE_AUTOMAKE=YES -> USE_AUTOMAKE_VER=14
Ports attempting to use the old style system after June 1st 2004 will be
sorely disappointed.
script was renamed to solve a conflict with archivers/rpm) to fix possible
build problems.
I've tested this with lang/icc. Any new errors because of this commit in
one of the modified ports may be because the ports previously may have used
rpm2cpio from archivers/rpm instead of the used {EXTRACT,BUILD}_DEPENDS
archivers/rpm2cpio.
