tag some specs

spec/tags/core/array/sample_tags.txt

@@ -35,3 +35,4 @@ fails:Array#sample calls #to_f on the Object returned by #rand
 fails:Array#sample raises a RangeError if the random generator returns a value less than 0.0
 fails:Array#sample raises a RangeError if the random generator returns a value equal to 1.0
 fails:Array#sample raises a RangeError if the random generator returns a value greater than 1.0
+fails:Array#sample ignores an Object passed for the RNG if it does not define #rand

spec/tags/core/symbol/inspect_tags.txt

@@ -28,7 +28,6 @@ fails:Symbol#inspect returns self as a symbol literal for :$@
 fails:Symbol#inspect returns self as a symbol literal for :$1234
 fails:Symbol#inspect returns self as a symbol literal for :-@
 fails:Symbol#inspect returns self as a symbol literal for :+@
-fails:Symbol#inspect returns self as a symbol literal for :+
 fails:Symbol#inspect returns self as a symbol literal for :%
 fails:Symbol#inspect returns self as a symbol literal for :&
 fails:Symbol#inspect returns self as a symbol literal for :*

spec/tags/language/symbol_tags.txt

@@ -2,3 +2,4 @@ fails:A Symbol literal is a ':' followed by a single- or double-quoted string th
 fails:A Symbol literal can be created by the %s-delimited expression
 fails:A Symbol literal can contain null in the string
 fails:A Symbol literal can be an empty string
+fails:A Symbol literal is converted to a literal, unquoted representation if the symbol contains only valid characters