fixed very bad memory overwrite which leaded to segfaults on some systems....

fixed very bad memory overwrite which leaded to segfaults on some systems. removed redundant buffer betweend mISDN reading thread and ast_read in favour of the already existing pipe, this clarifies the way a voice frame takes between mISDN and asterisk a lot. centralized debugging of NumberPlan. removed a compiler warning.

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@27346 65c4cc65-6c06-0410-ace0-fbb531ad65f3