make people provide these headers when porting

libc/sysdeps/linux/common/bits/kernel_stat.h

@@ -1,57 +1,2 @@
-#ifndef _BITS_STAT_STRUCT_H
+/* bits/kernel_stat.h is architecture specific.  */
-#define _BITS_STAT_STRUCT_H
+#error "This file must be supplied by every Linux architecture."
-
-/* This file provides whatever this particular arch's kernel thinks 
- * struct kernel_stat should look like...  It turns out each arch has a 
- * different opinion on the subject... */
-#warning "Please verify struct kernel_stat for your architecture actually matches struct kernel_stat for x86  If it doesn't, then you will need to add a proper kernel_stat.h for your architecture..."
-
-struct kernel_stat {
-	unsigned short st_dev;
-	unsigned short __pad1;
-	unsigned long st_ino;
-	unsigned short st_mode;
-	unsigned short st_nlink;
-	unsigned short st_uid;
-	unsigned short st_gid;
-	unsigned short st_rdev;
-	unsigned short __pad2;
-	unsigned long  st_size;
-	unsigned long  st_blksize;
-	unsigned long  st_blocks;
-	unsigned long  st_atime;
-	unsigned long  __unused1;
-	unsigned long  st_mtime;
-	unsigned long  __unused2;
-	unsigned long  st_ctime;
-	unsigned long  __unused3;
-	unsigned long  __unused4;
-	unsigned long  __unused5;
-};
-
-struct kernel_stat64 {
-	unsigned short	st_dev;
-	unsigned char	__pad0[10];
-#define _HAVE_STAT64___ST_INO
-	unsigned long	__st_ino;
-	unsigned int	st_mode;
-	unsigned int	st_nlink;
-	unsigned long	st_uid;
-	unsigned long	st_gid;
-	unsigned short	st_rdev;
-	unsigned char	__pad3[10];
-	long long	st_size;
-	unsigned long	st_blksize;
-	unsigned long	st_blocks;	/* Number 512-byte blocks allocated. */
-	unsigned long	__pad4;		/* future possible st_blocks high bits */
-	unsigned long	st_atime;
-	unsigned long	__pad5;
-	unsigned long	st_mtime;
-	unsigned long	__pad6;
-	unsigned long	st_ctime;
-	unsigned long	__pad7;		/* will be high 32 bits of ctime someday */
-	unsigned long long	st_ino;
-};
-
-#endif	/*  _BITS_STAT_STRUCT_H */
-

libc/sysdeps/linux/common/bits/setjmp.h

@@ -1,7 +1,2 @@
-/* Define the machine-dependent type `jmp_buf'.  Stub version.  */
+/* bits/setjmp.h is architecture specific.  */
-
+#error "This file must be supplied by every Linux architecture."
-#ifndef _SETJMP_H
-# error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
-#endif
-
-typedef int __jmp_buf[1];