Update some build.sh shell script for create install path

guowenxue

2020-08-21 efe27ff0ad416853f838a0fd3f11528ce80a1d5e

 3rdparty/imageMagick/build.sh

@@ -89,6 +89,11 @@
    cd -
}

if [ ! -f ${PREFIX_PATH}/lib/libz.so ] ; then
    cd ../zlib
    ./build.sh
    cd -
fi

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