minimal fixes to visual test, so that it actually builds w/o warnings:

- linux_process.c: add an SDLVisualTest_ScreenshotProcess() stub for
  linux builds succeed.
- action_configparser.c: fixes -Wswitch warnings.
- testharness.c: fixes 'is used uninitialized' warnings for userevents.
- testharness.c: fixes format string argument to 'Force killing...'
- testquit.c: fix type of options array in main().
- windows_screenshot.c: lowercase windows.h header name.
- ran dos2unix on all sources and add missing newlines at files' ends.
- minor adjustments to autotools build system (which actually seems to
  need more surgery for unnecessary stuff...)

visualtest/src/mischelper.c

@@ -1,15 +1,15 @@
 /**
- * \file mischelper.c 
+ * \file mischelper.c
  *
  * Source file with miscellaneous helper functions.
  */
 
 #include <SDL_test.h>
 
-void
-SDLVisualTest_HashString(char* str, char hash[33])
-{
-    SDLTest_Md5Context md5c;
+void
+SDLVisualTest_HashString(char* str, char hash[33])
+{
+    SDLTest_Md5Context md5c;
     int i;
 
     if(!str)
@@ -20,9 +20,9 @@ SDLVisualTest_HashString(char* str, char hash[33])
 
     SDLTest_Md5Init(&md5c);
     SDLTest_Md5Update(&md5c, (unsigned char*)str, SDL_strlen(str));
-    SDLTest_Md5Final(&md5c);
-
-    /* convert the md5 hash to an array of hexadecimal digits */
+    SDLTest_Md5Final(&md5c);
+
+    /* convert the md5 hash to an array of hexadecimal digits */
     for(i = 0; i < 16; i++)
-        SDL_snprintf(hash + 2 * i, 33 - 2 * i, "%02x", (int)md5c.digest[i]);
-}
+        SDL_snprintf(hash + 2 * i, 33 - 2 * i, "%02x", (int)md5c.digest[i]);
+}