Valkyries start with a spear instead of a long sword

Long swords are overused, and Knights already start with a long sword.
No other roles start with a spear. Lawful Valks shouldn't have an easy
way to get Excalibur.

There's also historical precedence for valkyries with spears, see eg.
Wagner's Ring Cycle.

This makes Valks early game damage slightly lower, although dwarven spear
does the same damage to small monsters as long sword, and there should be
plenty of chances to get one from the mines. Spears can also be thrown.

This change has been done in several variants, eg. xNetHack and Fourk.

doc/fixes3-7-0.txt

@@ -951,6 +951,7 @@ flying pets wouldn't target underwater food but if they happened to fly over
 	such food they could and would eat it
 praying on an altar with pet corpse on it can revive the pet
 applying a cursed oil lamp can make your hands slippery
+valkyries start with a spear instead of a long sword
 
 
 Fixes to 3.7.0-x Problems that Were Exposed Via git Repository

src/u_init.c

@@ -150,7 +150,7 @@ static struct trobj Tourist[] = {
     { 0, 0, 0, 0, 0 }
 };
 static struct trobj Valkyrie[] = {
-    { LONG_SWORD, 1, WEAPON_CLASS, 1, UNDEF_BLESS },
+    { SPEAR, 1, WEAPON_CLASS, 1, UNDEF_BLESS },
     { DAGGER, 0, WEAPON_CLASS, 1, UNDEF_BLESS },
     { SMALL_SHIELD, 3, ARMOR_CLASS, 1, UNDEF_BLESS },
     { FOOD_RATION, 0, FOOD_CLASS, 1, 0 },
@@ -520,7 +520,7 @@ static const struct def_skill Skill_V[] = {
     { P_HAMMER, P_EXPERT },
     { P_QUARTERSTAFF, P_BASIC },
     { P_POLEARMS, P_SKILLED },
-    { P_SPEAR, P_SKILLED },
+    { P_SPEAR, P_EXPERT },
     { P_TRIDENT, P_BASIC },
     { P_LANCE, P_SKILLED },
     { P_SLING, P_BASIC },