vim: updated to 7.2.394, dropped older versions, cleaned recipes

vim: updated to 7.2.394, dropped older versions, cleaned recipes

I added 394 upstream patches to vim into metadata as checksums for them
would be bigger then patch itself.

Older (6.2, 6.4, 7.0) versions got dropped as they can have security
problems and no one maintains them.

Recipes for 7.2 got cleaned - we have gvim, vim-tiny and vim now. Main
code is split between vim.inc and vim_7.2.bb files. Adding new variants
is now easier due to VIMFEATURES, VIMX and VIMGUI variables.

EXTRA_OECONF variables were generated by running vim configure script on
BUG 2.0 device.

Signed-off-by: Marcin Juszkiewicz <marcin@juszkiewicz.com.pl>