No more needs for subcall classes

New account implementation.
Need to test more and add dynamic handling in Qt Interface.
SipCall, Call, VoIPLink were rewritten completly
Configuration now in [SIP0] section of .sflphonedrc
The debug of sflphoned is very verbose.
sflphone-cli may not work right now (need to send SIP0 as accountId).

VoIPLink integration inside account
getAccount() patch for managerimpl
Remove old voiplink vector in managerimpl

First Account-based save/load implementation

Add AccountCreator and AccountMap handling
New empty AixAccount/SipAccount
Next step is internal account configuration

Add account classes and CallAccountMap functions and tests

UML for sflphone old and new design
Add comparaison matrix on iaxclient/sflphone/libeXosip2

New STUN logic to discover true firewall port (NAT)
Send true IP/port in SDP message
Remove big ###### debugging message
New logic to listening on SIP port: 2 tries

Fix Bug #1554 - Qmage::fromMimeSource: Cannot find image in the mime source factory

Support @ and : in data entry ;p (error with shift as a character)

Remove old class/struct

Nicer debugging message.
Save registration data before registring.
Move Call Enumeration to Call Class.
Receive register failed/succeed message

Two variables in sflphonedrc configuration file to disable tone or dtmf sound

Adding register failed/succeed message inside dialog

Use PORTAUDIO_LIBS variable to compile libportaudio.la with -lflags (-lasound)

Re-enable register button in configuration panel ui
Todo: to send a popup if the registration has failed or connected
Todo: use the account arg on the server

Use -DDEBUG when the user set --enable-debug=full
Use -g only if --enable-debug=yes
Don't use -02 if --enable-debug=full

Refactoring --enable-options code

Disable speex by default
Didn't find the cause yet to const SpeexMove/SpeexMove bug seen on some ubuntu distribution