Use valid tokens as cookie names

	---
	 spec/ruby/library/cgi/cookie/name_spec.rb  | 12 ++++++------
	 spec/ruby/library/cgi/cookie/parse_spec.rb | 10 +++++-----
	 2 files changed, 11 insertions(+), 11 deletions(-)

	Disable deprecation warning by the default [Feature #16345]

	And `-w` option turns it on.

	Fix error raised by Net::HTTPResponse#inflater if the block raises

	* See https://bugs.ruby-lang.org/issues/13882#note-6

	Quarantine specs which fail frequently with CHECK_LEAKS=true

FreeBSD

```
$ ruby -rsyslog -e 'Syslog.open("rubyspec", Syslog::LOG_PERROR) {|s| s.log(Syslog::LOG_ALERT, "Hello") }'
rubyspec 78462 - - Hello
```

Linux

```
$ ruby -rsyslog -e 'Syslog.open("rubyspec", Syslog::LOG_PERROR) {|s| s.log(Syslog::LOG_ALERT, "Hello") }'
rubyspec: Hello
```

https://github.com/freebsd/freebsd/commit/591ef7c8076109cff3c41f9bb50da996a34121e9

[Bug #16497]

https://github.com/ruby/stringio/commit/4958a5ccab
(cherry picked from commit e257c08f2ec27e2d66cdfa7e2415deb492522e22)

Fixed misspellings reported at [Bug #16437], only in ruby and rubyspec.

This removes the related tests, and puts the related specs behind
version guards.  This affects all code in lib, including some
libraries that may want to support older versions of Ruby.

Follow up of 473882e01f7e55753733e2607ace633b5041f11f