message: Correctly pass -j option to make when compiling C driver
  Fixes a bug where the MAKEFLAGS environment variable was not being
  properly exported before invoking make, during compile of the C driver
  in Evergreen.
diff: @@ -69,16 +69,14 @@ cd $DIR
  case "$OS" in
  darwin)
  - MAKEFLAGS="-j"$(sysctl -n hw.logicalcpu)
  PKG_CONFIG_PATH="$PREFIX/lib/pkgconfig" ./configure $CONFIGURE_ARGS
  - make
  + make "-j$(sysctl -n hw.logicalcpu)"
  make install
  ;;
  linux)
  - MAKEFLAGS="-j"$(grep -c ^processor /proc/cpuinfo)
  PKG_CONFIG_PATH="$PREFIX/lib/pkgconfig" ./configure $CONFIGURE_ARGS
  - make
  + make "-j$(grep -c ^processor /proc/cpuinfo)"
  make install
  ;;
  