lollipop: Update to use OpenJDK 7

* Upstream uses OpenJDK 7, no more Oracle Java!

Dockerfile

@@ -5,12 +5,6 @@ FROM ubuntu:14.04
 
 MAINTAINER Kyle Manna <kyle@kylemanna.com>
 
-# Setup for Java
-RUN echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" \
-        >> /etc/apt/sources.list.d/webupd8.list && \
-    apt-key adv --keyserver keyserver.ubuntu.com --recv-keys EEA14886 && \
-    echo oracle-java6-installer shared/accepted-oracle-license-v1-1 select true | debconf-set-selections
-
 # /bin/sh points to Dash by default, reconfigure to use bash until Android
 # build becomes POSIX compliant
 RUN echo "dash dash/sh boolean false" | debconf-set-selections && \
@@ -22,7 +16,7 @@ RUN apt-get update && \
         flex g++-multilib gcc-multilib git gnupg gperf lib32ncurses5-dev \
         lib32readline-gplv2-dev lib32z1-dev libesd0-dev libncurses5-dev \
         libsdl1.2-dev libwxgtk2.8-dev libxml2-utils lzop \
-        oracle-java6-installer oracle-java6-set-default \
+        openjdk-7-jdk \
         pngcrush schedtool xsltproc zip zlib1g-dev && \
     apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*