fix [part of] #H103 - misleading prompt when choosing role,&c

From a bug report, specifying role and race
along with invalid alignment for that role/race combination resulted in a
prompt of "pick the alignment of your chaotic human Valkyrie".  This fixes
that particular problem, but the role selection code is incomprehensible
and I don't have a lot of confidence about whether other combinations have
similar trouble.

     This also fixes an obvious typo in ok_align().  Unfortunately I can't
figure out what to do with the if-then-else block in root_plselection_prompt
which has identical code for its `then' and `else' halves (in the alignment
code that the new ok_align() test skips).

doc/fixes34.4

@@ -226,6 +226,9 @@ fix message handling when multiple shopkeepers are present at end of game
 'C' command can't name shopkeepers or temple priests and other minions
 when "of <deity>" is intentionally being suppressed, an aligned or high
 	priestess would be described as an aligned or high priest
+specifying role and/or race along with an invalid alignment for it/them in
+	NETHACKOPTIONS or config file would yield a prompt which misleadingly
+	mentioned the rejected alignment when asking player to pick alignment
 
 
 Platform- and/or Interface-Specific Fixes