- fix target_examine declaration

- remove build warnings
- added --enable-gccwarnings to docs
- update mips_m4k_examine function

git-svn-id: svn://svn.berlios.de/openocd/trunk@893 b42882b7-edfa-0310-969c-e2dbd0fdcd60

src/helper/jim.c

@@ -7760,7 +7760,7 @@ void *dlsym(void *handle, const char *symbol)
     return GetProcAddress((HMODULE)handle, symbol);
 }
 static char win32_dlerror_string[121];
-const char *dlerror()
+const char *dlerror(void)
 {
     FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(),
                    LANG_NEUTRAL, win32_dlerror_string, 120, NULL);