LibAMG - first commit
Fix calls to log messages

Use syslog
Change get_interface_ipv4_addr

Return pointer to in_addr structure when retrieving the address
Add license to if.c
Add process management functions
Add gitignore file
add gateway default hwaddr get
add dahdi, sip, str, log features
remove register feature; move allow and dtmfmode to user space
add comcerto lib to save/load configs from config_file
modify config files
Add echo canceling Enable/Disable variable

TODO Link with DAHDI configuration
Comcerto: Add Tx/Rx gain configuration
Comcerto: Add reload function to RTP module
add modification related to multiple codecs support
Merge branch 'master' of git.pd3:parks-amg/libamg
Add missing header file in str.c
Fix warning in compilation of process.c
Add dependency to VAPI library
Add Comcerto DSP configuration files: dsp.c/dsp.h

This code was previously present in comcerto-config-module,
used by the Comcerto RTP engine. Since we need other parts of code
to use these functions, it was moved insided LibAMG.