Removed trailing spaces in the most relevant files

Command used for the job:
egrep -rl ' $' --include *.c --include *.h --include  *.s --include  *.inc --include  *.txt *  | xargs sed -i 's/\s\+$//g'

Credits to Grant Murphy from Stack Overflow.

sound/songs/se_m_snore.s

@@ -63,28 +63,28 @@ se_m_snore_2:
 	.byte		VOICE , 27
 	.byte		N01   , En2 , v052
 	.byte	W02
-	.byte		        Dn2 
+	.byte		        Dn2
 	.byte	W02
-	.byte		        En2 
+	.byte		        En2
 	.byte	W02
 	.byte	W01
-	.byte		        Dn2 
+	.byte		        Dn2
 	.byte	W02
-	.byte		        En2 
+	.byte		        En2
 	.byte	W03
 	.byte	W01
 	.byte		        En2 , v064
 	.byte	W02
-	.byte		        Gs2 
+	.byte		        Gs2
 	.byte	W03
-	.byte		        Dn3 
+	.byte		        Dn3
 	.byte	W02
-	.byte		        En2 
+	.byte		        En2
 	.byte	W02
-	.byte		        Gs2 
+	.byte		        Gs2
 	.byte	W02
 	.byte	W01
-	.byte		        Dn3 
+	.byte		        Dn3
 	.byte	W05
 	.byte	FINE