Add tags for new failing specs

Author: eregon

spec/tags/core/file/expand_path_tags.txt

@@ -20,3 +20,5 @@ slow:File.expand_path raises an Encoding::CompatibilityError if the external enc
 slow:File.expand_path does not modify the string argument
 slow:File.expand_path does not modify a HOME string argument
 slow:File.expand_path returns a String when passed a String subclass
+fails:File.expand_path when HOME is not set uses the user database when passed '~' if HOME is nil
+fails:File.expand_path when HOME is not set uses the user database when passed '~/' if HOME is nil

spec/tags/core/range/new_tags.txt

@@ -1,3 +1,5 @@
 fails:Range.new does not rescue exception raised in #<=> when compares the given start and end
 fails:Range.new endless range allows endless right boundary
 fails:Range.new endless range distinguishes ranges with included and excluded right boundary
+fails:Range.new beginless/endless range allows endless right boundary
+fails:Range.new beginless/endless range distinguishes ranges with included and excluded right boundary

spec/tags/core/tracepoint/enable_tags.txt

@@ -23,3 +23,8 @@ fails:TracePoint#enable target_line: option raises ArgumentError if :target_line
 fails:TracePoint#enable target_line: option raises TypeError if :target_line value couldn't be coerced to Integer
 fails:TracePoint#enable target_line: option raises ArgumentError if :target_line value is negative
 fails:TracePoint#enable target_line: option excepts value that could be coerced to Integer
+fails:TracePoint#enable target: option raises ArgumentError if passed not Method/UnboundMethod/Proc
+fails:TracePoint#enable target: option option value accepts Method
+fails:TracePoint#enable target: option option value accepts UnboundMethod
+fails:TracePoint#enable target: option option value accepts Proc
+fails:TracePoint#enable target_line: option accepts value that could be coerced to Integer

spec/tags/library/conditionvariable/wait_tags.txt

@@ -0,0 +1 @@
+fails:ConditionVariable#wait calls #sleep on the given object