All paths moved to path.h.

Cleanup in curses.h: removed reg definition.
All include files reformatted for 4-space indent.

include/mtab.h

@@ -3,14 +3,14 @@
  * All rights reserved.  The Berkeley software License Agreement
  * specifies the terms and conditions for redistribution.
  *
- *	@(#)mtab.h	5.1 (Berkeley) 5/30/85
+ *  @(#)mtab.h  5.1 (Berkeley) 5/30/85
  */
 
 /*
  * Mounted device accounting file.
  */
 struct mtab {
-	char	m_path[32];		/* mounted on pathname */
-	char	m_dname[32];		/* block device pathname */
-	char	m_type[4];		/* read-only, quotas */
+    char    m_path[32];     /* mounted on pathname */
+    char    m_dname[32];    /* block device pathname */
+    char    m_type[4];      /* read-only, quotas */
 };