Allow starting game as pauper, without any inventory

And also without spells, skills, or preidentified items.
This also implies nudist.

Breaks saves and bones.

include/optlist.h

@@ -548,6 +548,9 @@ static int optfn_##a(int, int, boolean, char *, char *);
     NHOPTC(paranoid_confirmation, Advanced, 28, opt_in, set_in_game,
                 Yes, Yes, Yes, Yes, "prayconfirm",
                 "extra prompting in certain situations")
+    NHOPTB(pauper, Advanced, 0, opt_in, set_in_config,
+           Off, Yes, No, No, NoAlias, &u.uroleplay.pauper, Term_False,
+           "start your character without any items")
     NHOPTB(perm_invent, Advanced, 0, opt_in, set_in_game,
                 Off, Yes, No, No, NoAlias, &iflags.perm_invent, Term_Off,
                 "show persistent inventory window")

include/patchlevel.h

@@ -17,7 +17,7 @@
  * Incrementing EDITLEVEL can be used to force invalidation of old bones
  * and save files.
  */
-#define EDITLEVEL 106
+#define EDITLEVEL 107
 
 /*
  * Development status possibilities.

include/you.h

@@ -162,6 +162,7 @@ struct u_roleplay {
     boolean blind;  /* permanently blind */
     boolean nudist; /* has not worn any armor, ever */
     boolean deaf;   /* permanently deaf */
+    boolean pauper; /* no starting inventory */
     long numbones;  /* # of bones files loaded  */
 };