Build with -march=pentium4 on travis and appveyor

Author: tkelman

.travis.yml

@@ -32,6 +32,7 @@ before_install:
         sudo add-apt-repository ppa:staticfloat/julia-deps -y;
         sudo apt-get update -qq -y;
         if [ "$ARCH" = "i686" ]; then
+          export BUILDOPTS="$BUILDOPTS MARCH=pentium4";
           sudo apt-get remove libblas3gf liblapack3gf libarmadillo2 -y;
           sudo apt-get install binutils:i386 -y;
           sudo apt-get install gcc:i386 g++:i386 make:i386 cpp:i386 g++-4.6:i386 gcc-4.6:i386 libssl-dev:i386 patchelf:i386 gfortran:i386 llvm-3.3-dev:i386 libsuitesparse-dev:i386 libopenblas-dev:i386 libopenblas-base:i386 libblas-dev:i386 liblapack-dev:i386 liblapack3:i386 libarpack2-dev:i386 libarpack2:i386 libfftw3-dev:i386 libgmp-dev:i386 libpcre3-dev:i386 libunwind7-dev:i386 libopenlibm-dev:i386 libmpfr-dev:i386 -y;

contrib/windows/msys_build.sh

@@ -62,8 +62,7 @@ else
   bits=32
   archsuffix=86
   exc=sjlj
-  echo "override MARCH = i686" >> Make.user
-  echo "override JULIA_CPU_TARGET = pentium4" >> Make.user
+  echo "override MARCH = pentium4" >> Make.user
   echo 'LIBBLAS = -L$(JULIAHOME)/usr/bin -lopenblas' >> Make.user
   echo 'LIBBLASNAME = libopenblas' >> Make.user
 fi