Updating xar URL and removing depricated compile

Dockerfile

@@ -1,12 +1,5 @@
 FROM golang:1.7.1
 
-# Copied straight from the golang:1.4-cross Dockerfile, but reducing the number of platforms
-RUN cd /usr/src/go/src \
-    && set -ex \
-    && for GOOS in darwin linux; do \
-        GOOS=$GOOS ./make.bash --no-clean 2>&1; \
-    done
-
 RUN apt-get update && apt-get install -y \
                                 cpio \
                                 file \
@@ -31,7 +24,7 @@ WORKDIR /tmp
 # Get dependencies for building hologram
 RUN go get github.com/jteeuwen/go-bindata/...
 RUN git clone https://github.com/pote/gpm.git && cd gpm && ./configure && make install && rm -rf /tmp/gpm
-RUN wget http://xar.googlecode.com/files/xar-1.5.2.tar.gz && tar xf xar-1.5.2.tar.gz && cd xar-1.5.2 && ./configure && make && make install && rm -rf /tmp/xar-1.5.2
+RUN wget https://storage.googleapis.com/google-code-archive-downloads/v2/code.google.com/xar/xar-1.5.2.tar.gz && tar xf xar-1.5.2.tar.gz && cd xar-1.5.2 && ./configure && make && make install && rm -rf /tmp/xar-1.5.2
 RUN git clone https://github.com/hogliux/bomutils.git > /dev/null && cd bomutils && make > /dev/null && make install  > /dev/null && rm -rf /tmp/bomutils
 
 ENV HOLOGRAM_DIR /go/src/github.com/AdRoll/hologram