Adjust archeologist and valkyrie intrinsics

I felt it was strange that archeologist started out both
fast and stealthy, but didn't gain searching until level 10.
So, archeologists now start with searching, gain stealth at 5,
and fast at 10.

Similarly valkyries starting out stealthy felt odd, so now they'll
get it at level 3.

This leaves only the rogue starting out innately stealthy, which
feels appropriate.

doc/fixes3-7-0.txt

@@ -1114,6 +1114,7 @@ a monster capable of using a polymorph trap to deliberately change form could
 give feedback when some types of damage are avoided due to MC (aka negation)
 feedback if a named, shape-shifted vampire reverted to original shape rather
 	than dying when engulfed could say "Dracula turns into Dracula"
+adjust archeologist and valkyrie starting intrinsics
 
 
 Fixes to 3.7.0-x Problems that Were Exposed Via git Repository

src/attrib.c

@@ -23,9 +23,9 @@ static const struct innate {
     schar ulevel;
     long *ability;
     const char *gainstr, *losestr;
-} arc_abil[] = { { 1, &(HStealth), "", "" },
-                 { 1, &(HFast), "", "" },
-                 { 10, &(HSearching), "perceptive", "" },
+} arc_abil[] = { { 1, &(HSearching), "", "" },
+                 { 5, &(HStealth), "stealthy", "" },
+                 { 10, &(HFast), "quick", "slow" },
                  { 0, 0, 0, 0 } },
 
   bar_abil[] = { { 1, &(HPoison_resistance), "", "" },
@@ -78,7 +78,7 @@ static const struct innate {
                  { 0, 0, 0, 0 } },
 
   val_abil[] = { { 1, &(HCold_resistance), "", "" },
-                 { 1, &(HStealth), "", "" },
+                 { 3, &(HStealth), "stealthy", "" },
                  { 7, &(HFast), "quick", "slow" },
                  { 0, 0, 0, 0 } },