libpayload: Add PDCurses and ncurses' libform/libmenu

PDCurses provides an alternative implementation of the curses library
standard in addition to tinycurses.
Where tinycurses is really tiny, PDCurses is more complete and provides
virtually unlimited windows and the full API.
The PDCurses code is brought in "vanilla", with all local changes
residing in curses/pdcurses-backend/

In addition to a curses library, this change also provides libpanel (as
part of the PDCurses code), and libform and libmenu which were derived
from ncurses-5.9.
As they rely on ncurses internals (and PDCurses is not ncurses), more
changes were required for these libraries to work.

The build system is extended to install the right set of header files
depending on the selected curses implementation.

Change-Id: I9e5b920f94b6510da01da2f656196a993170d1c5
Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Reviewed-on: http://review.coreboot.org/106
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marcj303@gmail.com>
diff --git a/payloads/libpayload/curses/PDCurses-3.4/panel.h b/payloads/libpayload/curses/PDCurses-3.4/panel.h
new file mode 100644
index 0000000..1d7cace
--- /dev/null
+++ b/payloads/libpayload/curses/PDCurses-3.4/panel.h
@@ -0,0 +1,58 @@
+/* Public Domain Curses */
+
+/* $Id: panel.h,v 1.19 2008/07/13 16:08:16 wmcbrine Exp $ */
+
+/*----------------------------------------------------------------------*
+ *                         Panels for PDCurses                          *
+ *----------------------------------------------------------------------*/
+
+#ifndef __PDCURSES_PANEL_H__
+#define __PDCURSES_PANEL_H__ 1
+
+#include <curses.h>
+
+#if defined(__cplusplus) || defined(__cplusplus__) || defined(__CPLUSPLUS)
+extern "C"
+{
+#endif
+
+typedef struct panelobs
+{
+    struct panelobs *above;
+    struct panel *pan;
+} PANELOBS;
+
+typedef struct panel
+{
+    WINDOW *win;
+    int wstarty;
+    int wendy;
+    int wstartx;
+    int wendx;
+    struct panel *below;
+    struct panel *above;
+    const void *user;
+    struct panelobs *obscure;
+} PANEL;
+
+int     bottom_panel(PANEL *pan);
+int     del_panel(PANEL *pan);
+int     hide_panel(PANEL *pan);
+int     move_panel(PANEL *pan, int starty, int startx);
+PANEL  *new_panel(WINDOW *win);
+PANEL  *panel_above(const PANEL *pan);
+PANEL  *panel_below(const PANEL *pan);
+int     panel_hidden(const PANEL *pan);
+const void *panel_userptr(const PANEL *pan);
+WINDOW *panel_window(const PANEL *pan);
+int     replace_panel(PANEL *pan, WINDOW *win);
+int     set_panel_userptr(PANEL *pan, const void *uptr);
+int     show_panel(PANEL *pan);
+int     top_panel(PANEL *pan);
+void    update_panels(void);
+
+#if defined(__cplusplus) || defined(__cplusplus__) || defined(__CPLUSPLUS)
+}
+#endif
+
+#endif /* __PDCURSES_PANEL_H__ */