Allow dropping just picked up items

When using a menu to drop or put in items into a container,
allow putting in the item (or items) you picked up previously,
by selecting the 'P' entry from the item class menu

Inspired by the itemcat patch by Stanislav Traykov.

Invalidates saves and bones.

doc/Guidebook.mn

@@ -729,6 +729,8 @@ drop all objects known to be uncursed.
 drop all objects known to be cursed.
 .PL DX
 drop all objects of unknown B/U/C status.
+.PL DP
+drop objects picked up last.
 .PL Da
 drop all objects, without asking for confirmation.
 .PL Di
@@ -826,6 +828,8 @@ list all items known to be uncursed;
 list all items known to be cursed;
 .PL IX
 list all items whose bless/curse status is unknown;
+.PL IP
+list items picked up last;
 .PL I$
 count your money.
 .PE

doc/Guidebook.tex

@@ -829,6 +829,7 @@ the bless\-ed/\-un\-curs\-ed/\-curs\-ed groups may be typed.\\
 {\tt DU}  --- drop all objects known to be uncursed.\\
 {\tt DC}  --- drop all objects known to be cursed.\\
 {\tt DX}  --- drop all objects of unknown B/U/C status.\\
+{\tt DP}  --- drop objects picked up last.\\
 {\tt Da}  --- drop all objects, without asking for confirmation.\\
 {\tt Di}  --- examine your inventory before dropping anything.\\
 {\tt Du}  --- drop only unpaid objects (when in a shop).\\
@@ -903,6 +904,7 @@ for potions.\\
 {\tt IU} --- list all items known to be uncursed;\\
 {\tt IC} --- list all items known to be cursed;\\
 {\tt IX} --- list all items whose bless/curse status is unknown;\\
+{\tt IP} --- list items picked up last;\\
 {\tt I\$} --- count your money.
 %.ei
 %.ed

doc/fixes37.0

@@ -1158,6 +1158,7 @@ new bigroom variant, a boulder maze
 vomiting on an altar provokes the deities wrath
 branch stairs have a different glyph, show up in yellow color in tty
 duration of confusion when drinking booze depends upon hunger state
+using 'D' allows dropping items picked up previously
 
 
 Platform- and/or Interface-Specific New Features