(PUP-2831) Make Puppet work with RGen 0.7.0

This updates the Gemfile to use RGen 0.7.0 (optionally).
In RGen 0.7.0 containment now works as specified, if something is
contained more than once, it moves to the last container that contains
it (by removing it as contained from all other containers). This caused
problems in the Function API where the block default Callable type was
reused for all signatures (and thus moved). There were also problems in
tests where the same type instances was contained in multiple locations.

This fixes these to use distinct instances.
(maint) Remove dead code
(RE-1497) Remove quantal from build_defaults

This commit removes quantal from all build defaults because it is end of
life. It removes the defaults from the build_defaults yaml.
Merge pull request #2807 from clantant/RE-1497/stable/srcs

(RE-1497) Remove quantal from build_defaults
(maint) Disable timesyncing for acceptance tests

We have been seeing windows time service errors on 2008R2 while
performing time syncing. This step should not actually be necessary
as vsphere seems to provide synchronized time across VMs from the pool.
(maint) Pin puppet git acceptance to use facter 2.0.2

Previously, when running acceptance tests on platforms that still use
git checkouts, e.g. Windows, we were installing puppet#stable and
facter#stable. However, we recently released facter 2.1, which now
resides in facter#stable. On Windows, facter 2.1 requires a newer
win32-security gem than what puppet#stable installs, causing errors
like:

    lib/win32/security.rb:54:in `elevated_security?': Incorrect function

This commit ensures we install facter 2.0.2 (commit 7845c9aa0df) when
running acceptance from git checkouts. This should only affect Windows
and Solaris, as Linux acceptance runs against packages, which will pull
in the most recently released dependencies.
(PUP-2858) Remove e_parser adapter support

This removes support for the hybrid future parser/old evaluator
by changing the ParserFactory to always select the future parser/
new evaluator combination. As a consequence, the EParserAdapter
is no longer needed and it is now dropped together with its tests.
(PUP-2858) Deprecate the use of Puppet[:environment] == current

This changes defaults.rb to deprecate the use of :environment = :current
The future evaluator is always picked by the Parser::Factory and
the setting has no effect. It may have effect in future versions of
Puppet (for additional experiments when Puppet 4.0 is released). For
that purpose, the settings is not completely removed.
(PUP-2858) Remove use of Puppet[:evaluator] from the code base

This removes all usage of Puppet[:evaluator] from the code base
since it is (in this version) enough to check if Puppet[:parser] is
'future' as the future evaluator is always used.
(PUP-2858) Refactor EvaluatingParser::Transitional to EvaluatingParser

This merges the behavior of the Transitional subclass of the
EvaluatingParser into the main class, as the hybrid solution is no
longer a supported alternative.

As a consequence, all references to the
Pops::Parser::EvaluatingParser::Transitional has been changed to
just Pops::Parser::EvaluatingParser.

This commit alters no behavior.
(PUP-2858) Remove the 3_1 checker and its factory

This removes the Checker_3_1 and its factory from the code base.
This hybrid checker contained less validation (less string) than
the 4.0 checker and its main purpose was to fail expressions that
could not be evaluated with the 3x AST based evaluation (such as -=).

It is also not meaningful to continue its development as the new
4_0 checker is far better. If there is a later need to check
for "backwards compatibility" to 3x, it is better to start fresh with a
new copy of the 4_0 evaluator.
(PUP-2858) Refactor binder to use ne evaluator

The binder always transformed to 3x to get executable code. This
is not needed when using the new evaluator.
(PUP-2858) Remove duplicated testing (evaluator = 'current')

There was a test (environment_spec) that ran an extra time
with the hybrid parser = future, evaluator = current which results
in the same tests running twice. (This because the future evaluator
is enforced when runing with future parser).
(maint) mount: fix awkward grammar in :dump docstring
(maint) mount: remove spurious newvalue invocation from :dump
(PUP-2885) Remove timeout around entire plugin sync operation

This removes the timeout around the entire plugin sync. With the
default setting of configtimeout to 2min, this means that the entire
sync must be performed within this time. This conflicts with the
individual timeouts for connecting and reading and may cause that a
perfectly valid operation is timed out in the middle of productive work.
(PUP-2858) Remove evaluator setting

The evaluator selection is no longer possible and so the setting is not
needed. Although removing this setting could be considered to be
backwards incompatible, I don't think it should be considered such. The
issue is that puppet can no longer support the "current" value for the
evaluator and so anything we do will either behave differently (use the
future evaluator instead) or fail (remove the setting or cause it to
fail if the value is "current"). Since this is part of an experimental
feature, I think that simply removing it is a reasonable course of
action.
(maint) Remove biff setting and related code

The Biff setting is not one that we need in the 3.x series. The work
that it was for was halted and will be picked up at a later date.
Merge branch 'pr/2819'

* pr/2819:
  (maint) Remove biff setting and related code
  (PUP-2858) Remove evaluator setting
  (PUP-2858) Remove duplicated testing (evaluator = 'current')
  (PUP-2858) Refactor binder to use ne evaluator
  (PUP-2858) Remove the 3_1 checker and its factory
  (PUP-2858) Refactor EvaluatingParser::Transitional to EvaluatingParser
  (PUP-2858) Remove use of Puppet[:evaluator] from the code base
  (PUP-2858) Deprecate the use of Puppet[:environment] == current
  (PUP-2858) Remove e_parser adapter support

Conflicts:
	spec/integration/node/environment_spec.rb

Closes #2819
Merge pull request #2802 from hlindberg/PUP-2831_use-rgen-0-7-0

(PUP-2831) Make Puppet work with RGen 0.7.0