Merge branch 'maint'

* maint:
  Make sure the empty tree exists when needed in merge-recursive.
  Don't use memcpy when source and dest. buffers may overlap
  no need to install manpages as executable

Documentation/Makefile

@@ -56,8 +56,8 @@ man7: $(DOC_MAN7)
 
 install: man
 	$(INSTALL) -d -m755 $(DESTDIR)$(man1dir) $(DESTDIR)$(man7dir)
-	$(INSTALL) $(DOC_MAN1) $(DESTDIR)$(man1dir)
-	$(INSTALL) $(DOC_MAN7) $(DESTDIR)$(man7dir)
+	$(INSTALL) -m644 $(DOC_MAN1) $(DESTDIR)$(man1dir)
+	$(INSTALL) -m644 $(DOC_MAN7) $(DESTDIR)$(man7dir)
 
 
 #

index-pack.c

@@ -96,7 +96,7 @@ static void flush(void)
 		if (output_fd >= 0)
 			write_or_die(output_fd, input_buffer, input_offset);
 		SHA1_Update(&input_ctx, input_buffer, input_offset);
-		memcpy(input_buffer, input_buffer + input_offset, input_len);
+		memmove(input_buffer, input_buffer + input_offset, input_len);
 		input_offset = 0;
 	}
 }

merge-recursive.c

@@ -1238,7 +1238,7 @@ static int merge(struct commit *h1,
 
 		tree->object.parsed = 1;
 		tree->object.type = OBJ_TREE;
-		hash_sha1_file(NULL, 0, tree_type, tree->object.sha1);
+		write_sha1_file(NULL, 0, tree_type, tree->object.sha1);
 		merged_common_ancestors = make_virtual_commit(tree, "ancestor");
 	}