[Asterisk-bsd] issue 4 on zaptel trunk

[Richard Neese]

fxo_test.c: In function 'zt_dial':
fxo_test.c:142: warning: incompatible implicit declaration of built-in 
function 'strncpy'
fxo_test.c: In function 'main':
fxo_test.c:253: warning: incompatible implicit declaration of built-in 
function 'exit'
fxo_test.c:263: warning: incompatible implicit declaration of built-in 
function 'exit'