Update stdint.h; Refresh <arch>/include/machine/*

stdint.h: https://android-review.googlesource.com/#/c/41714/
            https://android-review.googlesource.com/#/c/40576/
  <arch>/include/machine/*: to be consistent with
     bionic/libc/<arch>/include/machine/*

Change-Id: Ieeb44c3e864bf64c4cad4d3c9d94024a7b520181

ndk/platforms/android-9/arch-mips/include/machine/kernel.h

@@ -25,8 +25,8 @@
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
-#ifndef _ARCH_ARM_KERNEL_H
-#define _ARCH_ARM_KERNEL_H
+#ifndef _ARCH_MIPS_KERNEL_H
+#define _ARCH_MIPS_KERNEL_H
 
 /* this file contains kernel-specific definitions that were optimized out of
    our processed kernel headers, but still useful nonetheless... */
@@ -39,4 +39,4 @@ typedef unsigned long   __kernel_fsblkcnt_t;
 typedef unsigned long   __kernel_fsfilcnt_t;
 typedef unsigned int    __kernel_id_t;
 
-#endif /* _ARCH_ARM_KERNEL_H */
+#endif /* _ARCH_MIPS_KERNEL_H */

ndk/platforms/android-9/arch-mips/include/machine/signal.h

@@ -57,7 +57,7 @@ typedef int sig_atomic_t;
  * a non-standard exit is performed.
  */
 
-#if defined(ANDROID_CHANGES)
+#if defined(__ANDROID__)
 
 /*
  * The Linux and OpenBSD sigcontext structures are slightly different
@@ -104,7 +104,7 @@ struct	sigcontext {
 
 #else /* __LANGUAGE_ASSEMBLY */
 
-#ifdef ANDROID_CHANGES
+#ifdef __ANDROID__
 
 #define	SC_REGMASK	(0*REGSZ)
 #define	SC_STATUS	(1*REGSZ)
@@ -140,7 +140,7 @@ struct	sigcontext {
 #define	SC_FPUSED	(70 * REGSZ)
 #define	SC_FPC_EIR	(71 * REGSZ)
 
-#endif /*ANDROID CHANGES*/
+#endif /* __ANDROID__ */
 
 #endif /* __LANGUAGE_ASSEMBLY */