Renamed files to make them more clear

Trying to figure out how to write. Might have to keep tables uncompressed for now.

writer_inodes.go

@@ -1,6 +1,9 @@
 package squashfs
 
-import "io"
+import (
+	"encoding/binary"
+	"io"
+)
 
 func (w *Writer) countInodes() (out uint32) {
 	out++ //for the root directory
@@ -10,6 +13,17 @@ func (w *Writer) countInodes() (out uint32) {
 	return
 }
 
+func (w *Writer) calculateInodeTableSize() (out int, err error) {
+	for _, files := range w.structure {
+		for i := range files {
+			_ = i
+			//set up each file's inode and add it's binary.size to out
+			out += binary.Size(files[i].inode)
+		}
+	}
+	return
+}
+
 func (w *Writer) writeInodeTable(wrt io.WriterAt, off int64) (newOff int64, err error) {
 	newOff = off
 	return