[LinphoneHandler] reenabled codecs: PCMU and PCMA

 * This enabled testing unecrypted calls with snome sip telephones.

 * Therefore this is part of #8.
[LinphoneThread] now detects unencrypted calls NOT WORKING

 * This patch does not work porperly: it detects false positives.
   It is only here for history and reverted by the next commit.

 * This is part of #8.
Revert "[LinphoneThread] now detects unencrypted calls NOT WORKING"

This reverts commit 22b01d8899c69bfb1dd9ee8eafcfa90374f8bca4.

* This is part of #8.
[bootstrap-liblinphone.sh] now may patch ortp

* This is part of #8.
[liblinphone] added patch to ortp to detect if the other side does not support zrtp

* This is part of #8.
[Resources] copied uncrypted call sound effect from: http://soundjax.com/reddo/75015%5ESIREN.mp3

  * and converted unencrypted_call to ogg with:

    avconv -i unencrypted_call.mp3 -acodec libvorbis unencrypted_call.ogg

  * This is part of #8.
[SoundEffectManager] renamed RingtoneThread -> SoundEffectManager

  * This is part of #8.
[SoundEffectManager] may now play different types, new Type: UNENCRYPTED_CALL_ALARM

  * This is part of #8.
[SoundEffectManager] now works in main thread
[SimlarService] now starts ringing and vibrating on unencrypted calls

  * This is part of #8.
[CallActivity] added layout for unencrypted calls warning

* This is part of #8.
[liblinphone] updated but staying at linphone version 2.2.1.1

* This is part of #8.
Merge pull request #63 from simlar/unencrypted-call-pullrequest

Unencrypted call pullrequest