disk/ doc/ lib_*/ and tools/: Remove lingering references to CFG_CMD_* symbols.

Fixed some broken instances of "#ifdef CMD_CFG_IDE" too.
Those always evaluated TRUE, and thus were always compiled
even when IDE really wasn't defined/wanted.

Signed-off-by: Jon Loeliger <jdl@freescale.com>

lib_mips/board.c

@@ -403,7 +403,7 @@ void board_init_r (gd_t *id, ulong dest_addr)
 	if ((s = getenv ("bootfile")) != NULL) {
 		copy_filename (BootFile, s, sizeof (BootFile));
 	}
-#endif	/* CFG_CMD_NET */
+#endif
 
 #if defined(CONFIG_MISC_INIT_R)
 	/* miscellaneous platform dependent initialisations */