Don't move fonts from xorg-x11-fonts-core to xorg-x11-fonts

- Add Recommends: xorg-x11-fonts-converted and xorg-x11-fonts-legacy
so the packages get installed automatically (and users can remove
any of them or both)

- Add a legacy subpackage that provides the bitmap and Type1 fonts
under /usr/share/fonts/(75dpi|100dpi|Type1) so the user can
choose if installing the original fonts (the legacy subpackage),
the fonts converted to TrueType format (the converted subpackage)
or both.
- Add some pcf fonts too from /usr/share/fonts/misc to the legacy
subpackage and make them available as TrueType in the converted
package (boo#1169444)