Apparently was forgotten at some stage. Rectify the situation.

Signed-off-by: Simo Piiroinen <simo.piiroinen@jollamobile.com>

Adjust pkg-config package list, use dbus-gmain.c from submodule.

Signed-off-by: Simo Piiroinen <simo.piiroinen@jollamobile.com>

Different config files must be used when diagnostic mode is
selected. In practice diagnostic mode selection is locked early
on during usb-moded startup and never changes. But as long as it
is possible, it would need to be taken into account in situations
where configuration files need to be re-evaluated.

Make it impossible to change diagnostic mode selection once it
has been made.

Signed-off-by: Simo Piiroinen <simo.piiroinen@jollamobile.com>

Selection of diagnostic mode is made once during lifetime of usb-moded
process. Passing it around as parameter can only lead to confusion.

Make it so that appsync_read_list() reads configuration files from
directory determined from globally defined diagnostic mode selection
rather than from parameter passed to it.

Use glob pattern for determining list of files to read. As a side effect
this stops usb-moded from reading all files (e.g. editor backup files
accidentally left behind) which could lead into obscure and hard to
figure out problems.

Signed-off-by: Simo Piiroinen <simo.piiroinen@jollamobile.com>

Developer mode does not work immediately after installing related
packages. Developer mode does become available for selecting, but
it does not work as expected because dhcpd is not started on
activation.

This is because usb-moded fails to reload appsync configuration
upon receiving SIGHUP and previous configuration state stays
effective until usb-moded is restarted (or device rebooted).

As appsync config contains state data that is used in worker
thread, existing configuration can't be just discarded and
replaced when processing SIGHUP from control thread.

Refactor appsync logic so that it keeps track of both active and
updated configuration. Load updated configuration on SIGHUP. Then
switch active configuration on the next mode transition - so that
the previous state is retained while it might be needed.

Signed-off-by: Simo Piiroinen <simo.piiroinen@jollamobile.com>

Reload appsync configuration on SIGHUP

See merge request mer-core/usb-moded!70