Support v1.5.0

[terasakisatoshi]

This PR adds Dockerfiles regarding to Julia v1.5.0

[terasakisatoshi]

armv6

armv7

[terasakisatoshi]

Remark:

• The following patch is required to avoid the issue armv7l: ptrtoint not supported for non-integral pointers JuliaLang/julia#36062 to pass building procedure, otherwise it happens an error with inttoptr not supported for non-integral pointers.

    sed -i -e '69s/devnull/stdout/' ${JL_BUILD_DIR}/contrib/generate_precompile.jl && \
    sed -i -e '63,65 s/^/#/'     ${JL_BUILD_DIR}/contrib/generate_precompile.jl && \
    sed -i -e '190 s/^/#/'       ${JL_BUILD_DIR}/contrib/generate_precompile.jl && \
    cat ${JL_BUILD_DIR}/contrib/generate_precompile.jl && \
    cd $JL_BUILD_DIR && make -j 16 OPENBLAS_USE_THREAD=0 && make install && \
    rm -r $JL_BUILD_DIR && \
    echo "Done"

[terasakisatoshi]

Fortunately since yuyichao-san have solved the issue above ( JuliaLang/julia#36062) with this PR JuliaLang/julia#36705 there is a good chance to build Julia v1.6-DEV.

The following screenshot shows we can build Julia v1.6-DEV on our Raspberry Pi4 locally (without using Docker)