qemu-ga patch queue for 2.7

* fix w32 build failures due to -Werror when building with VSS/fsfreeze
   enabled
 * fix leaking for qemu-ga config files in `make check`
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Merge remote-tracking branch 'remotes/mdroth/tags/qga-pull-2016-07-25-tag' into staging

qemu-ga patch queue for 2.7

* fix w32 build failures due to -Werror when building with VSS/fsfreeze
  enabled
* fix leaking for qemu-ga config files in `make check`

# gpg: Signature made Mon 25 Jul 2016 20:01:09 BST
# gpg:                using RSA key 0x3353C9CEF108B584
# gpg: Good signature from "Michael Roth <flukshun@gmail.com>"
# gpg:                 aka "Michael Roth <mdroth@utexas.edu>"
# gpg:                 aka "Michael Roth <mdroth@linux.vnet.ibm.com>"
# Primary key fingerprint: CEAC C9E1 5534 EBAB B82D  3FA0 3353 C9CE F108 B584

* remotes/mdroth/tags/qga-pull-2016-07-25-tag:
  configure: mark qemu-ga VSS includes as system headers
  tests: use static qga config file
  build-sys: link tests/data

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

configure

@@ -4051,13 +4051,13 @@ fi
 
 if test "$mingw32" = "yes" -a "$guest_agent" != "no" -a "$vss_win32_sdk" != "no" ; then
   case "$vss_win32_sdk" in
-    "")   vss_win32_include="-I$source_path" ;;
+    "")   vss_win32_include="-isystem $source_path" ;;
     *\ *) # The SDK is installed in "Program Files" by default, but we cannot
           # handle path with spaces. So we symlink the headers into ".sdk/vss".
-          vss_win32_include="-I$source_path/.sdk/vss"
+          vss_win32_include="-isystem $source_path/.sdk/vss"
 	  symlink "$vss_win32_sdk/inc" "$source_path/.sdk/vss/inc"
 	  ;;
-    *)    vss_win32_include="-I$vss_win32_sdk"
+    *)    vss_win32_include="-isystem $vss_win32_sdk"
   esac
   cat > $TMPC << EOF
 #define __MIDL_user_allocate_free_DEFINED__
@@ -5995,6 +5995,11 @@ for rom in seabios vgabios ; do
     echo "LD=$ld" >> $config_mak
 done
 
+# set up tests data directory
+if [ ! -e tests/data ]; then
+    symlink "$source_path/tests/data" tests/data
+fi
+
 # set up qemu-iotests in this build directory
 iotests_common_env="tests/qemu-iotests/common.env"
 iotests_check="tests/qemu-iotests/check"

tests/data/test-qga-config

@@ -0,0 +1,8 @@
+[general]
+daemon=false
+method=virtio-serial
+path=/path/to/org.qemu.guest_agent.0
+pidfile=/var/foo/qemu-ga.pid
+statedir=/var/state
+verbose=true
+blacklist=guest-ping;guest-get-time

tests/test-qga.c

@@ -691,28 +691,11 @@ static void test_qga_blacklist(gconstpointer data)
 static void test_qga_config(gconstpointer data)
 {
     GError *error = NULL;
-    char *cwd, *cmd, *out, *err, *str, **strv, *conf, **argv = NULL;
+    char *cwd, *cmd, *out, *err, *str, **strv, **argv = NULL;
     char *env[2];
-    int status, tmp;
+    int status;
     gsize n;
     GKeyFile *kf;
-    const char *qga_config =
-        "[general]\n"
-        "daemon=false\n"
-        "method=virtio-serial\n"
-        "path=/path/to/org.qemu.guest_agent.0\n"
-        "pidfile=/var/foo/qemu-ga.pid\n"
-        "statedir=/var/state\n"
-        "verbose=true\n"
-        "blacklist=guest-ping;guest-get-time\n";
-
-    tmp = g_file_open_tmp(NULL, &conf, &error);
-    g_assert_no_error(error);
-    g_assert_cmpint(tmp, >=, 0);
-    g_assert_cmpstr(conf, !=, "");
-
-    g_file_set_contents(conf, qga_config, -1, &error);
-    g_assert_no_error(error);
 
     cwd = g_get_current_dir();
     cmd = g_strdup_printf("%s%cqemu-ga -D",
@@ -720,7 +703,8 @@ static void test_qga_config(gconstpointer data)
     g_shell_parse_argv(cmd, NULL, &argv, &error);
     g_assert_no_error(error);
 
-    env[0] = g_strdup_printf("QGA_CONF=%s", conf);
+    env[0] = g_strdup_printf("QGA_CONF=tests%cdata%ctest-qga-config",
+                             G_DIR_SEPARATOR, G_DIR_SEPARATOR);
     env[1] = NULL;
     g_spawn_sync(NULL, argv, env, 0,
                  NULL, NULL, &out, &err, &status, &error);
@@ -775,11 +759,8 @@ static void test_qga_config(gconstpointer data)
 
     g_free(out);
     g_free(err);
-    g_free(conf);
     g_free(env[0]);
     g_key_file_free(kf);
-
-    close(tmp);
 }
 
 static void test_qga_fsfreeze_status(gconstpointer fix)