Reorder some libdwP.h struct members for optimal packing.
diff --git a/libdw/libdwP.h b/libdw/libdwP.h
index eacc49f..359aaec 100644
--- a/libdw/libdwP.h
+++ b/libdw/libdwP.h
@@ -226,6 +226,8 @@
 
 struct Dwarf_Line_s
 {
+  Dwarf_Files *files;
+
   Dwarf_Addr addr;
   unsigned int file;
   int line;
@@ -235,8 +237,6 @@
   unsigned int end_sequence:1;
   unsigned int prologue_end:1;
   unsigned int epilogue_begin:1;
-
-  Dwarf_Files *files;
 };
 
 struct Dwarf_Lines_s