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.

visualtest/unittest/testquit.actions

@@ -0,0 +1 @@
+00:00:05 QUIT

visualtest/unittest/testquit.c

@@ -0,0 +1,101 @@
+/*
+  Copyright (C) 2013 Apoorv Upreti <apoorvupreti@gmail.com>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely.
+*/
+/* Quits, hangs or crashes based on the command line options passed. */
+
+#include <SDL.h>
+#include <SDL_test.h>
+
+static SDLTest_CommonState *state;
+static int exit_code;
+static SDL_bool hang;
+static SDL_bool crash;
+
+int
+main(int argc, char** argv)
+{
+    int i, done;
+    SDL_Event event;
+
+    state = SDLTest_CommonCreateState(argv, SDL_INIT_VIDEO);
+    if(!state)
+        return 1;
+
+    state->window_flags |= SDL_WINDOW_RESIZABLE;
+    
+    exit_code = 0;
+    hang = SDL_FALSE;
+    crash = SDL_FALSE;
+
+    for(i = 1; i < argc; )
+    {
+        int consumed;
+        consumed = SDLTest_CommonArg(state, i);
+        if(consumed == 0)
+        {
+            consumed = -1;
+            if(SDL_strcasecmp(argv[i], "--exit-code") == 0)
+            {
+                if(argv[i + 1])
+                {
+                    exit_code = SDL_atoi(argv[i + 1]);
+                    consumed = 2;
+                }
+            }
+            else if(SDL_strcasecmp(argv[i], "--hang") == 0)
+            {
+                hang = SDL_TRUE;
+                consumed = 1;
+            }
+            else if(SDL_strcasecmp(argv[i], "--crash") == 0)
+            {
+                crash = SDL_TRUE;
+                consumed = 1;
+            }
+        }
+
+        if(consumed < 0)
+        {
+            SDLTest_Log("Usage: %s %s [--exit-code N] [--crash] [--hang]", argv[0], SDLTest_CommonUsage(state));
+            SDLTest_CommonQuit(state);
+            return 1;
+        }
+        i += consumed;
+    }
+
+    if(!SDLTest_CommonInit(state))
+    {
+        SDLTest_CommonQuit(state);
+        return 1;
+    }
+
+    /* infinite loop to hang the process */
+    while(hang)
+        SDL_Delay(10);
+
+    /* dereference NULL pointer to crash process */
+    if(crash)
+    {
+        int* p = NULL;
+        *p = 5;
+    }
+
+    /* event loop */
+    done = 0;
+    while(!done)
+    {
+        while(SDL_PollEvent(&event))
+            SDLTest_CommonEvent(state, &event, &done);
+        SDL_Delay(10);
+    }
+
+    return exit_code;
+}

visualtest/unittest/testquit.config

@@ -0,0 +1,5 @@
+sutconfig=testquit.parameters
+action-config=testquit.actions
+variator=exhaustive
+sutapp=testquit
+timeout=00:00:10

visualtest/unittest/testquit.parameters

@@ -0,0 +1,3 @@
+--exit-code, integer, [-1 1], false, [] # The exit code returned by the executable
+--crash, boolean, [], false, [] # Crashes the SUT executable
+--hang, boolean, [], false, [] # Runs the SUT in the infinite loop and ignores all events