Add libnewt-dev to install-prereq.

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@269203 65c4cc65-6c06-0410-ace0-fbb531ad65f3

contrib/scripts/install_prereq

@@ -26,7 +26,7 @@ PACKAGES_DEBIAN="$PACKAGES_DEBIAN libncurses-dev libz-dev libssl-dev libxml2-dev
 PACKAGES_DEBIAN="$PACKAGES_DEBIAN libcurl-dev libspeex-dev libspeexdsp-dev libogg-dev libvorbis-dev libasound2-dev portaudio19-dev libcurl4-openssl-dev"
 PACKAGES_DEBIAN="$PACKAGES_DEBIAN libpq-dev unixodbc-dev libsqlite0-dev libsqlite3-dev libmysqlclient15-dev libneon27-dev libgmime-2.0-2-dev libusb-dev liblua5.1-0-dev"
 PACKAGES_DEBIAN="$PACKAGES_DEBIAN libopenh323-dev libvpb-dev libgtk2.0-dev libmysqlclient-dev libbluetooth-dev libradiusclient-ng-dev freetds-dev"
-PACKAGES_DEBIAN="$PACKAGES_DEBIAN libsnmp-dev libiksemel-dev libopenais-dev"
+PACKAGES_DEBIAN="$PACKAGES_DEBIAN libsnmp-dev libiksemel-dev libopenais-dev libnewt-dev"
 
 PACKAGES_RH="gcc gcc-c++ ncurses-devel openssl-devel"