Always put a version suffix to the ruby name (no matter if ruby is the
default version) to avoid mess in future.
[Notes for i386 users]
If you are a ruby developer and still want to stick with ruby 1.6 as
default, please add RUBY_DEFAULT_VER=1.6 to /etc/make.conf.
If you are a ruby developer and want to keep ruby 1.6 as default,
please add RUBY_DEFAULT_VER=1.6 to /etc/make.conf. Otherwise, please
run the following series of commands to migrate to ruby 1.8:
1) Reinstall portupgrade manually (and ruby 1.8 will be installed)
pkg_delete portupgrade-\*
(cd /usr/ports/sysutils/portupgrade; make install clean)
2) Reinstall everything that depends on ruby 1.6 (to use ruby 1.8)
portupgrade -fr lang/ruby16
3) Reinstall ruby 1.8 (because the previous step kills symlinks)
portupgrade -f lang/ruby18
4) Deinstall ruby 1.6 stuff (if you are paranoia)
pkg_deinstall -ri lang/ruby16
