bump parrot revision, closes #133
Update HLL::Backend::Parrot to use new EvalPMC/PackfileView API.

Resolves issue #76, but requires a Parrot newer than
RELEASE_5_7_0-20-g07dfdb4.  See issue #76 for more details.
Update parrot bootstrap files for EvalPMC/PackfileView changes.

Fixes NQP issue #76.
rubyish - style, use of '(' ~ ')' constructs, etc
implemented rubyish lambda, etc - nqp::makeclosure++
explain what the primitive types for *primspec are.
bump VERSION to 2013.10
some doco for nqp::makeclosure
doco oops nqp::makeclosure => nqp::takeclosure
regexes: speed up scanning for literal matches

if an unanchored regex (not ignoring case) starts with a literal,
we now use the "index" opcode (at least on parrot) to search for
the start position.
Speeds up the fairly artifical benchmark nqp::x(abc, 500) ~ def ~~ /def/
by a factor of 4
added bitwise ops, fixed precedence, etc
[regex] avoid an unnecessary comparison

when the index is op is used, it always returns -1 for start indexes
beyond the string length
[MoarVM] use index to speed up scanning in regexes
add rubyish <=> cmp ops. refined .call syntax
rubyish - added .nil? method. removed non-standard // op
[docs] nqp::getcomp and nqp::bindcomp
[docs] missing apos
(same behavior as nqp-p)
Remove concat_s fossil opcode

Fixes #138
added rubyish unless blocks