Applications: Fix a potential issue that help messages may be dumped …

…to AcpiGbl_DebugFile

This is a regression fix, restoring usage macro to its original
implementation.

There is an issue for usage macros, if an command line option changed
AcpiGbl_DebugFile, then the follow up usage message may be errornously
dumped to the debug file.
This is just a bug in theory, because currently AcpiGbl_DebugFile can only
be modified by acpibin and acpiexec. And this will not trigger such issue
because:
1. For acpibin, AcpiGbl_DebugFile will be modified by "-t" option and the
   program exits after processing this option without dumping help message
   or other error options.
2. For acpiexec, AcpiGbl_DebugFile will only be modified by the open
   command, which happens after parsing the command line options, so no
   help message will be dumped into the debug file.
But maintaining this logic is difficult, so this patch modifies
AcpiOsPrintf() into printf() for usage macros so that the help messages are
ensured to be dumped to the stdout. Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>

source/include/acapps.h

@@ -155,13 +155,13 @@
 /* Macros for usage messages */
 
 #define ACPI_USAGE_HEADER(Usage) \
-    AcpiOsPrintf ("Usage: %s\nOptions:\n", Usage);
+    printf ("Usage: %s\nOptions:\n", Usage);
 
 #define ACPI_USAGE_TEXT(Description) \
-    AcpiOsPrintf (Description);
+    printf (Description);
 
 #define ACPI_OPTION(Name, Description) \
-    AcpiOsPrintf ("  %-20s%s\n", Name, Description);
+    printf ("  %-20s%s\n", Name, Description);
 
 
 /* Check for unexpected exceptions */