Refactor to remove un-named struct gnu extension usage. Now ISO C89 and C99 compliant. Comment trailing endifs

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@78537 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/int_lib.h b/lib/int_lib.h
index 8f07ba2..2df7444 100644
--- a/lib/int_lib.h
+++ b/lib/int_lib.h
@@ -45,7 +45,7 @@
         si_int high;
         su_int low;
 #endif /* _YUGA_LITTLE_ENDIAN */
-    };
+    }s;
 } dwords;
 
 typedef union
@@ -60,7 +60,7 @@
         su_int high;
         su_int low;
 #endif /* _YUGA_LITTLE_ENDIAN */
-    };
+    }s;
 } udwords;
 
 #if __x86_64
@@ -80,7 +80,7 @@
         di_int high;
         du_int low;
 #endif /* _YUGA_LITTLE_ENDIAN */
-    };
+    }s;
 } twords;
 
 typedef union
@@ -95,7 +95,7 @@
         du_int high;
         du_int low;
 #endif /* _YUGA_LITTLE_ENDIAN */
-    };
+    }s;
 } utwords;
 
 #endif /* __x86_64 */