rubygems-devel available on f15/16/f17 buildtree

[TASAKA Mamoru]

Hello, all:

Maybe someone has already noticed this, however I anyway annouce that
now rubygems-devel is also available on f15/f16/f17 buildtree (as
well as f17-ruby buildtree), and macros used for gems-based rpms
can be used. (f15/f16 new rubygems are now tagged as override, and currently
on -testing repository).

The differcence is
* f17-ruby %gem_dir points to /usr/share/gems, while f15/16/17 %gem_dir
  points to /usr/lib/ruby/gems/1.8
" %gem_extdir is currently *not available*, because currently
  f15/f16/f17 (not f17-ruby) rubygems does not add %gem_extdir to
  search path.

So now for noarch gems, the same spec file can be used for 
f15/f16/f17/f17-ruby. 

For gems creating C module extension, some
difference still appear between f17-ruby spec file and f15/f16/f17
spec files. Maybe just adding %gem_extdir as rubygems' search path
on f15/f16 rubygems (and do nothing else) is one of the ideas -
with this spec files can be the same also for arch-specific gem
files.

Regards,
Mamoru