Add Module::CoreList::Utils module

The result of archaeology undertaken during QA Hackathon
in Lancaster, all the utilities that have shipped with each
version of perl.
fix wrong tense
update perlexperiment

- fixed a typo (%H instead of %^H)
- removed mention of Unicode support, which is so deep that I doubt that
  it could ever be removed
- added the following items to the "Current experiments" section
  - alloccopstash
  - cop_store_label
  - gv_fetchmethod_*_flags
  - op_scope
  - op_lvalue
  - Smart match (~~)
  - Lexical $_
  - Array and hash container functions accept references
  - Regular Expression Set Operations

- moved the following items to the "Accepted features" section
  - fork() emulation
  - Weak references
  - Internal file glob
  - 64-bit support
  - die accepts a reference
  - DB module

- moved the following items to the "Removed features" section
  - GetOpt::Long Options
  - 5.005-style threading
  - Test::Harness::Straps
  - perlcc
  - Assertions
  - The pseudo-hash data type

I tried to add the corresponding Perl versions of when features were added
and accepted or removed, but used the stable versions as I searched in the
perldelta's.
final version and perlhist update for 5.18.0
bump version to 5.19.0
bump the perldelta version
regen feature.pm
regenerate META.json
Perform all the "bump us to 5.19.0" work

...I hope.
Fix compiler warnings in regcomp.c
perlpacktut: nit
Remove core references to SVt_BIND

This scalar type was unused.  This is the first step in using the slot
freed up for another purpose.  The slot is now occupied by a temporary
placeholder named SVt_DUMMY.
Remove cpan/CPANPLUS-Dist-Build
Remove cpan/CPANPLUS and associated utilities
Remove cpan/Archive-Extract

  Note:

    Porting/core-cpan-diff refactored to use Archive::Tar
    instead of Archive::Extract
Remove cpan/B-Lint
Remove cpan/Pod-LaTeX and pod2latex utility
Remove cpan/Module-Pluggable
Remove cpan/Term-UI
Remove cpan/Object-Accessor