update to acpica-unix2-20140114
acpica-unix2-20130823
PANKOVs restructure

*** 3,13 ****
   * Name: accygwin.h - OS specific defines, etc. for cygwin environment
   *
   *****************************************************************************/
  
  /*
!  * Copyright (C) 2000 - 2011, Intel Corp.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
--- 3,13 ----
   * Name: accygwin.h - OS specific defines, etc. for cygwin environment
   *
   *****************************************************************************/
  
  /*
!  * Copyright (C) 2000 - 2014, Intel Corp.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
*** 48,57 ****
--- 48,58 ----
   * ACPICA configuration
   */
  #define ACPI_USE_SYSTEM_CLIBRARY
  #define ACPI_USE_DO_WHILE_0
  #define ACPI_FLUSH_CPU_CACHE()
+ 
  /*
   * This is needed since sem_timedwait does not appear to work properly
   * on cygwin (always hangs forever).
   */
  #define ACPI_USE_ALTERNATE_TIMEOUT
*** 87,92 ****
--- 88,102 ----
  
  /* Cygwin uses GCC */
  
  #include "acgcc.h"
  
+ 
+ /*
+  * The vsnprintf function is defined by c99, but cygwin/gcc does not
+  * enable this prototype when the -ansi flag is set. Also related to
+  * __STRICT_ANSI__. So, we just declare the prototype here.
+  */
+ int
+ vsnprintf (char *s, size_t n, const char *format, va_list ap);
+ 
  #endif /* __ACCYGWIN_H__ */