Signed-off-by: Emmanuel Milou <emmanuel.milou@savoirfairelinux.com>

Refs 42070

Refs #42054

Compile with USE_ALLOCA instead of NONTHREADSAFE_PSEUDOSTACK

Instead of mixing the different parameters of tls, zrtp and sdes in SecureSipCall
it's better to have them in separate inner classes.

Refs #40232

This was introduced in order to prevent the infinite busy ringtone.
Unfortunately it does not fix our sdes issue.

Refs #41441

Android app is now using the most recent verison of libccrtp

Refs #41441

Refs #41441

Refs #41441

Refs #41441

During a call, View does not calculate the secure call state anymore.

Refs #40232

Refs #40232

This commit introduces user-friendly feedback for security.
Not fully functionnal yet

Refs #40232

Refs #40232

This commit introduces basic bluetooth support.
If a headset is paired to the phone, audio will be correctly rerouted.
This is still experimental, due to the lack of testing devices.

Refs #41293

Refs #40232

Refs #40939

Refs #40939

Jenkins has only android-17 build tools installed.

We now build pjsip from our own android makefiles, we can generate an apk
compatible simultaneously with arm and x86.

Refs #40953

The modifications in SFLphone RTP layer need to be integrated when building
android client.

Refs #40020

Integration of new security features implies modifications in call handling.
By default, when handling a call,  a SipCall object is created, but if ZRTP hooks
are activated, the call is dynamically subclassed, and becomes a SecureSipCall.

Refs #40939

This commit introduces a new class holding references to the security state of
a call.

Refs #40939

SipCall keeps track of its security state, and store its SAS if needed.
This commit also introduce two new Fragments wrappers, for accounts and calls.
These wrappers reduce code duplication between fragments requiring hooks on daemon
signals.