intel partition map: implement changing the active partition

Implement the needed parts in both the userland add-on (loaded in
DriveSetup) and the kernel side one (used by disk system manager in the
kernel).

This allows changing the active partition in DriveSetup.

Change-Id: Ia65768b5f8f11d626ef24621ae7735723dcbc39d
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3771
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>

Revert "Intel partition: activate the first created partition."

This reverts commit d0a662e20a6eb37a59883c2c9377604f8c94cf03.

It is better to handle this in Installer when we know which partition
will actually be the system one.

Intel partition: activate the first created partition.

The default MBR relies on at least one partition being active. The first
one sounds like a good choice.

Fixes #7930.

intel disk_system: Renamed file to match class name.

* Renamed CreationParameterEditor.(cpp|h) to PrimaryParameterEditor.(cpp|h)
as that's what the sole class in there is called.

Revert "Intel partition: activate the first created partition."

This reverts commit d0a662e20a6eb37a59883c2c9377604f8c94cf03.

It is better to handle this in Installer when we know which partition
will actually be the system one.

Intel partition: activate the first created partition.

The default MBR relies on at least one partition being active. The first
one sounds like a good choice.

Fixes #7930.

intel disk_system: Renamed file to match class name.

* Renamed CreationParameterEditor.(cpp|h) to PrimaryParameterEditor.(cpp|h)
as that's what the sole class in there is called.