libpayload: Rename PDCurses-3.4 to PDCurses

Change-Id: If881ec130833c7e7e62caa3d31e350a531f5bc8e
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: http://review.coreboot.org/12398
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

payloads/libpayload/curses/PDCurses/demos/README

@@ -0,0 +1,25 @@
+PDCurses Demos
+==============
+
+This directory contains demonstration programs to show and test the 
+capabilities of curses libraries. Some of them predate PDCurses, 
+PCcurses or even pcurses/ncurses. Although some PDCurses-specific code 
+has been added, all programs remain portable to other implementations 
+(at a minimum, to ncurses).
+
+
+Building
+--------
+
+The demos are built by the platform-specific makefiles, in the platform 
+directories. Alternatively, you can build them manually, individually, 
+and link with any curses library; e.g., "cc -lcurses -orain rain.c". 
+There are no dependencies besides curses and the standard C library, and 
+no configuration is needed.
+
+
+Distribution Status
+-------------------
+
+Public Domain, except for rain.c and worm.c, which are under the ncurses 
+license (MIT-like).