Windows: Always set the system timer resolution to 1ms by default.

An existing hint lets apps that don't need the timer resolution changed avoid
this, to save battery, etc, but this fixes several problems in timing, audio
callbacks not firing fast enough, etc.

Fixes Bugzilla #2944.

build-scripts/nacl-buildbot.sh

@@ -0,0 +1,57 @@
+#!/bin/bash
+
+# This is the script buildbot.libsdl.org uses to cross-compile SDL2 from
+#  amd64 Linux to NaCl.
+
+export NACL_SDK_ROOT="/nacl_sdk/pepper_35"
+
+TARBALL="$1"
+if [ -z $1 ]; then
+    TARBALL=sdl-nacl.tar.xz
+fi
+
+OSTYPE=`uname -s`
+if [ "$OSTYPE" != "Linux" ]; then
+    # !!! FIXME
+    echo "This only works on x86 or x64-64 Linux at the moment." 1>&2
+    exit 1
+fi
+
+if [ "x$MAKE" == "x" ]; then
+    NCPU=`cat /proc/cpuinfo |grep vendor_id |wc -l`
+    let NCPU=$NCPU+1
+    MAKE="make -j$NCPU"
+fi
+
+BUILDBOTDIR="nacl-buildbot"
+PARENTDIR="$PWD"
+
+set -e
+set -x
+rm -f $TARBALL
+rm -rf $BUILDBOTDIR
+mkdir -p $BUILDBOTDIR
+pushd $BUILDBOTDIR
+
+# !!! FIXME: ccache?
+export CC="$NACL_SDK_ROOT/toolchain/linux_pnacl/bin/pnacl-clang"
+export CFLAGS="$CFLAGS -I$NACL_SDK_ROOT/include -I$NACL_SDK_ROOT/include/pnacl"
+export AR="$NACL_SDK_ROOT/toolchain/linux_pnacl/bin/pnacl-ar"
+export LD="$NACL_SDK_ROOT/toolchain/linux_pnacl/bin/pnacl-ar"
+export RANLIB="$NACL_SDK_ROOT/toolchain/linux_pnacl/bin/pnacl-ranlib"
+
+../configure --host=pnacl --prefix=$PWD/nacl-sdl2-installed
+$MAKE
+$MAKE install
+# Fix up a few things to a real install path
+perl -w -pi -e "s#$PWD/nacl-sdl2-installed#/usr/local#g;" ./nacl-sdl2-installed/lib/libSDL2.la ./nacl-sdl2-installed/lib/pkgconfig/sdl2.pc ./nacl-sdl2-installed/bin/sdl2-config
+mkdir -p ./usr
+mv ./nacl-sdl2-installed ./usr/local
+
+popd
+tar -cJvvf $TARBALL -C $BUILDBOTDIR usr
+rm -rf $BUILDBOTDIR
+
+set +x
+echo "All done. Final installable is in $TARBALL ...";
+