Update mac travis configuration to only pick specific brew packages (J…

…uliaLang#27334)

.travis.yml

@@ -82,10 +82,9 @@ before_install:
  export PATH="$(brew --prefix ccache)/libexec:$PATH";
  BAR="pv -i 30";
  contrib/travis_fastfail.sh || exit 1;
- brew tap staticfloat/julia;
+ brew tap staticfloat/julia > /dev/null;
  brew rm --force $(brew deps --HEAD julia);
- brew install -v --only-dependencies --HEAD julia;
- brew install -v staticfloat/juliadeps/libgfortran;
+ brew install -v gcc gmp mpfr pcre2 staticfloat/julia/openblas-julia staticfloat/julia/arpack-julia staticfloat/julia/suite-sparse-julia staticfloat/juliadeps/libgfortran;
  BUILDOPTS="-j3 USECLANG=1 USECCACHE=1 BINARYBUILDER_TRIPLET=x86_64-apple-darwin14";
  BUILDOPTS="$BUILDOPTS USE_BINARYBUILDER_LLVM=1 LLVM_CONFIG=$TRAVIS_BUILD_DIR/usr/tools/llvm-config LLVM_SIZE=$TRAVIS_BUILD_DIR/usr/tools/llvm-size";
  BUILDOPTS="$BUILDOPTS VERBOSE=1 USE_BLAS64=0 SUITESPARSE_INC=-I$(brew --prefix suite-sparse-julia)/include FORCE_ASSERTIONS=1";