CHANGES:
improve skew behavior, especially for faulty RTC; add "skew" config feature
add support for command-dial (ATD...;) in spandsp
add support for ATA for CED when off-hook and connected to a call
add support for ATD for CNG when off-hook and connected to a call
fix the ordering of the seteuid()/setegid() (Julien BLACHE)
update spandsp to 20080725 snapshot
The source code for IAXmodem can be downloaded here: http://sourceforge.net/project/showfiles.php?group_id=148814.