message: fix compile_nsync.sh
  compile_nsync.sh is not workable with android x86 arch, here is the fix by replacing arm specific arch option.
diff: @@ -215,12 +215,12 @@ for arch in $archs; do
  armeabi-v7a) toolchain="arm-linux-androideabi-4.9"
  sysroot_arch="arm"
  bin_prefix="arm-linux-androideabi"
  - march_option="-march=armv7-a"
  + march_option="-march=armv7-a -mfloat-abi=softfp -mfpu=neon"
  ;;
  armeabi-v7a-hard) toolchain="arm-linux-androideabi-4.9"
  sysroot_arch="arm"
  bin_prefix="arm-linux-androideabi"
  - march_option="-march=armv7-a"
  + march_option="-march=armv7-a -mfpu=neon"
  ;;
  mips) toolchain="mipsel-linux-android-4.9"
  sysroot_arch="mips"
  @@ -266,8 +266,7 @@ for arch in $archs; do
  -I$(NDK_ROOT)/sources/cxx-stl/gnu-libstdc++/4.9/libs/'"$arch"'/include \
  -I../../platform/c++11 -I../../platform/gcc \
  -I../../platform/posix -pthread
  - PLATFORM_CFLAGS=-std=c++11 -Wno-narrowing '"$march_option"' \
  - -mfloat-abi=softfp -mfpu=neon -fPIE
  + PLATFORM_CFLAGS=-std=c++11 -Wno-narrowing '"$march_option"' -fPIE
  PLATFORM_LDFLAGS=-pthread
  MKDEP=${CC} -M -std=c++11
  PLATFORM_C=../../platform/c++11/src/nsync_semaphore_mutex.cc \
  