Rename __unused struct members to include a namespace

Rename various spare fields in structs to include a namespace
This should avoid accidental clashes with uses of the __unused symbol
in upstream projects. eg currently it causes a compile error in dhcpcd 8.x
due to their re-use of the __unused symbol as a macro

This follows the style of glibc which does something equivalent

1 files changed, 10 insertions, 10 deletions

diff --git a/libc/sysdeps/linux/powerpc/bits/shm.h b/libc/sysdeps/linux/powerpc/bits/shm.h
index 63e7f6ed1..7ba17f8ad 100644
--- a/libc/sysdeps/linux/powerpc/bits/shm.h
+++ b/libc/sysdeps/linux/powerpc/bits/shm.h
@@ -50,26 +50,26 @@ struct shmid_ds
   {
     struct ipc_perm shm_perm;          /* operation permission struct */
 #if __WORDSIZE == 32
-    unsigned int __unused1;
+    unsigned int __uclibc_unused1;
 #endif
     __time_t shm_atime;                        /* time of last shmat() */
 #if __WORDSIZE == 32
-    unsigned int __unused2;
+    unsigned int __uclibc_unused2;
 #endif
     __time_t shm_dtime;                        /* time of last shmdt() */
 #if __WORDSIZE == 32
-    unsigned int __unused3;
+    unsigned int __uclibc_unused3;
 #endif
     __time_t shm_ctime;			/* time of last change by shmctl() */
 #if __WORDSIZE == 32
-    unsigned int __unused4;
+    unsigned int __uclibc_unused4;
 #endif
     size_t shm_segsz;                  /* size of segment in bytes */
     __pid_t shm_cpid;                  /* pid of creator */
     __pid_t shm_lpid;                  /* pid of last shmop */
     shmatt_t shm_nattch;               /* number of current attaches */
-    unsigned long __unused5;
-    unsigned long __unused6;
+    unsigned long __uclibc_unused5;
+    unsigned long __uclibc_unused6;
   };
 
 #ifdef __USE_MISC
@@ -91,10 +91,10 @@ struct shminfo
     unsigned long int shmmni;
     unsigned long int shmseg;
     unsigned long int shmall;
-    unsigned long int __unused1;
-    unsigned long int __unused2;
-    unsigned long int __unused3;
-    unsigned long int __unused4;
+    unsigned long int __uclibc_unused1;
+    unsigned long int __uclibc_unused2;
+    unsigned long int __uclibc_unused3;
+    unsigned long int __uclibc_unused4;
   };
 
 struct shm_info