This way font directories are not automatically removed; the package must
define OWN_DIRS if it wants them to be deleted during deinstallation.
This is done to avoid removal of standard font directories (those that
appear in *.dist files).
fonts.dir, fonts.scale and Fontmap files (depending on the font type) in
the right directories at (de)install time. Support included for TrueType,
Type1 and standard X11 fonts.
Reviewed by jlam.