Changes

lstopo/interactive: no need to list --index parameters
Only the global index type may be changed interactively.
Signed-off-by: Brice Goglin <Brice.Goglin@inria.fr>

lstopo/interactive: make a/t text/attrs toggle individual flags
Don't bother changing the flag of each type, just have a global
override only modified in interactive mode.
Signed-off-by: Brice Goglin <Brice.Goglin@inria.fr>

lstopo: rename the internal collapse toggle into pci_collapse_enabled
Signed-off-by: Brice Goglin <Brice.Goglin@inria.fr>

lstopo/windows use transparent background for writing text
Useful for displaying text outside of object boxes.
Signed-off-by: Brice Goglin <Brice.Goglin@inria.fr>

lstopo/draw: Don't fit zoom to window with 'f' shortcut
'F' is enough.
'f' will be used for factorizing.
Signed-off-by: Valentin Hoyet <Valentin.Hoyet@inria.fr> Signed-off-by:
Brice Goglin <Brice.Goglin@inria.fr>

lstopo/draw: add factorizing of identical children
Whenever there are more than 4 objects, show the first, second and last
ones, and replace others with dots.
This is enabled by default, but may be configured with --no-factorize 
and --factorize, either globally or on a per-type basis: one may change
the number of objects before factorizing gets enabled, and how many
first and last children to keep out of the dots.
The 'f' shortcut now toggles factorizing and PCI collapsing.
'c' doesn't toggle collapsing anymore.
Factorizing only applies to normal CPU-side children. It is similar to
PCI collapsing, but the latter is pretty much always enabled, hence we
don't want to always toggle them simultaneously.
Closes #228
Signed-off-by: Valentin Hoyet <Valentin.Hoyet@inria.fr> Signed-off-by:
Brice Goglin <Brice.Goglin@inria.fr>