Add core build-dep on libogg-dev for speex

debian/bootstrap.sh

@@ -284,6 +284,8 @@ Build-Depends:
  dpkg-dev (>= 1.15.8.12), gcc (>= 4:4.4.5), g++ (>= 4:4.4.5),
  libc6-dev (>= 2.11.3), make (>= 3.81),
  wget, pkg-config,
+# core codecs
+ libogg-dev,
 # configure options
  libssl-dev, unixodbc-dev, libpq-dev,
  libncurses5-dev, libjpeg62-dev | libjpeg8-dev,