cperl-5.22.1 release

Get the ball rolling.

No Tolkin quote.

cperl is also less postmodern than perl5.  There is usually a best way to
do it. Internally. In language interpreters there are not many good options,
but many bad ones.
cperl also not a religion.  We are liberal and don't enforce faith in the
maintainers.  You can light a candle, nice, but we won't expell you if you
do not.

Author: Reini Urban

Changes

@@ -5,6 +5,7 @@ These are the changes above perl-5.22.1 (i.e. 5.23.0)
 See pod/perlcperl.pod for a summary, but note that perlcperl includes also
 still in work features.
 
+  * Enable cloning of readonly packages with threads (upstream bug)
   * Add Travis hooks: https://travis-ci.org/perl11/cperl
   * Do not fallback to u_ ops on 32bit.
   * installperl uses PERLNAME=cperl with -Dusecperl
@@ -16,7 +17,7 @@ still in work features.
     #125350: qq{@{[0}*sub{]]}}}=sub{0' . "\c[" (Shlomi Fish, not upstream)
     fixed various off-by-one \0 errors with the new 5.16 GV code.
   * merge SVf_PROTECT with SVf_READONLY, no double readonly system
-  * fix old OA_TARGLEX bug with TARGET_MY optim
+  * fix ops using lexical $_, old OA_TARGLEX bug with TARGET_MY optim
   * add shaped arrays and optimize certain accesses to omit run-time
     bounds checks. loops with static ranges, constant array indices.
   * typed all internal ops and use them.

STATUS.md

@@ -59,6 +59,7 @@ github repo soon.
 * improved build system (make -s, faster, CC vs LD confusion)
 * hash keys keep the tainted info. see [perlsec](http://perldoc.perl.org/perlsec.html#Taint-mode)
 * fix ops using lexical `$_`
+* readonly packages can be cloned with threads
 
 Most of them only would have a chance to be merged upstream if a
 p5p committer would have written it.
@@ -75,7 +76,17 @@ See the github issues: [github.com/perl11/cperl/issues](http://github.com/perl11
 With 32bit fast-arithmetic optimizations are currently disabled.
 
 OS-specific non-unix Makefiles (e.g. Windows, VMS, os2, Cross, NetWare..)
-cannot generate a dynamic Config yet.
+cannot generate a dynamic Config yet. You may call it our temp. _"Config hell"_,
+but it's worth it. Patches welcome.
+
+Parallel builds sometimes stop at missing `Config.pm`. Redo the make
+then.  Packagers should try a 2nd make if the first stops, sorry. See
+the `.travis.yml` recipe.
+
+Without `-Dusecperl`, i.e. building a normal perl5, fails on a few tests.
+You shouldn't do that. See [#34](http://github.com/perl11/cperl/issues/34).
+USE_CPERL only makes it easier to take patches to upstream, but not all
+cornercases are adjusted.
 
 # Branch overview