Enable building Win64 binaries and running unit tests

Don't merge this until Win64 binaries work.

arm system images still crash during boot

Change-Id: I4aa88bfbea9e2ecd7168c4d5bb39eeeca315323f

Makefile.android

diff --git a/Makefile.android b/Makefile.android
index 600be7c..92767f0 100644
--- a/Makefile.android
+++ b/Makefile.android
@@ -10,9 +10,8 @@
 
 # This defines EMULATOR_BUILD_64BITS to indicate that 64-bit binaries
 # must be generated by the build system. For now, only do it for
-# Linux and Darwin, since we the sources do not compile with Mingw-w64
-# yet due to differing procedure call ABI conventions.
-EMULATOR_BUILD_64BITS := $(strip $(filter linux darwin,$(HOST_OS)))
+# Windows, Linux and Darwin.
+EMULATOR_BUILD_64BITS := $(strip $(filter linux darwin windows,$(HOST_OS)))
 
 # Disable 64-bit build for Darwin platform builds.
 ifeq ($(HOST_OS),darwin)

android-rebuild.sh

diff --git a/android-rebuild.sh b/android-rebuild.sh
index 8b54f09..8ca2c2a 100755
--- a/android-rebuild.sh
+++ b/android-rebuild.sh
@@ -75,12 +75,9 @@
 run make -j$HOST_NUM_CPUS OBJS_DIR="$OUT_DIR" ||
     panic "Could not build sources, please run 'make' to see why."
 
-RUN_64BIT_TESTS=true
-
 TEST_SHELL=
 EXE_SUFFIX=
 if [ "$MINGW" ]; then
-  RUN_64BIT_TESTS=
   TEST_SHELL=wine
   EXE_SUFFIX=.exe
 
@@ -100,13 +97,11 @@
     run $TEST_SHELL $OUT_DIR/$UNIT_TEST$EXE_SUFFIX || FAILURES="$FAILURES $UNIT_TEST"
     done
 
-    if [ "$RUN_64BIT_TESTS" ]; then
-        echo "Running 64-bit unit test suite."
-        for UNIT_TEST in emulator64_unittests emugl64_common_host_unittests; do
-            echo "   - $UNIT_TEST"
-            run $TEST_SHELL $OUT_DIR/$UNIT_TEST$EXE_SUFFIX || FAILURES="$FAILURES $UNIT_TEST"
-        done
-    fi
+    echo "Running 64-bit unit test suite."
+    for UNIT_TEST in emulator64_unittests emugl64_common_host_unittests; do
+        echo "   - $UNIT_TEST"
+        run $TEST_SHELL $OUT_DIR/$UNIT_TEST$EXE_SUFFIX || FAILURES="$FAILURES $UNIT_TEST"
+    done
 
     if [ "$FAILURES" ]; then
         panic "Unit test failures: $FAILURES"