proper error message for usage of 'do...for'

https://rt.perl.org/rt3/Ticket/Display.html?id=102652
Add Bool method to Capture

Right now, defined captures evaluate to `True`, but empty captures should probably be `False`.
turn WVal into Want + IVal if it's an Int.
need to decont the Int value before isbig_I will work.
cache symbols found in SETTING.
fix $!SETTING cache.
give the Want a .named; add Num and Str.
Merge branch 'wval_to_want' of https://github.com/timo/rakudo into nom
Merge pull request #110 from gerdr/patch-1

Add Bool method to Capture
port List.ACCEPTS back from b

* gets Whatever special handling for lists back.
Merge pull request #87 from FROGGS/patch-3

proper error message for usage of 'do...for'
Toto, I don't think we're in 2012 any more
RT #76828 - document memory build requirements.
Merge pull request #126 from labster/nom

inch IO::Path closer to the recent spec changes (path, volume, Str)
bring runtime importation closer to spec

This enables:
    require PATH <imports>
    require $varibale <imports>, and
    require ModuleName:file(PATH) <imports>.
So a given path or variable is always treated as a filename,
and a module name can be specified to ease importing.
remove reporting of variable name from uninit warnings

they produced too many false positives
track deletion of test file
sign up Coke and me
Updating changelog for release prep
label release