gnu: perl: Update to 5.22.0.

* gnu/packages/perl.scm (perl)[source]: Update to 5.22.0.  Remove
"perl-module-pluggable-search.patch" since Module::Pluggable appears to
be gone.
[arguments] <configure-phase>: Adjust Cwd.pm file name.  Replace
-std=c89 with -std=gnu89.
* gnu/packages/commencement.scm (perl-boot0): Add 'disable-pthreads'
phase.
* gnu/packages/patches/perl-no-sys-dirs.patch: Update.
* gnu/packages/patches/perl-module-pluggable-search.patch: Remove.
* gnu-system.am (dist_patch_DATA): Adjust accordingly.

1 files changed, 0 insertions, 25 deletions

diff --git a/gnu/packages/patches/perl-module-pluggable-search.patch b/gnu/packages/patches/perl-module-pluggable-search.patch
deleted file mode 100644
index bb2a57f7e5..0000000000
--- a/gnu/packages/patches/perl-module-pluggable-search.patch
+++ /dev/null
@@ -1,25 +0,0 @@
-Fix core Perl module Module::Pluggable such that it can find plugins that live
-in symlinked directories.
-
-Patch borrowed/adapted from Nixpkgs.
-
---- perl-5.16.1/cpan/Module-Pluggable/lib/Module/Pluggable/Object.pm	2015-04-08 23:28:48.120164135 -0500
-+++ perl-5.16.1/cpan/Module-Pluggable/lib/Module/Pluggable/Object.pm	2015-04-08 23:30:27.032166704 -0500
-@@ -164,7 +164,7 @@
-         my $sp = catdir($dir, (split /::/, $searchpath));
- 
-         # if it doesn't exist or it's not a dir then skip it
--        next unless ( -e $sp && -d _ ); # Use the cached stat the second time
-+        next unless ( -e $sp );
- 
-         my @files = $self->find_files($sp);
- 
-@@ -279,7 +279,7 @@
-                              (my $path = $File::Find::name) =~ s#^\\./##;
-                              push @files, $path;
-                            }
--                      }, $search_path );
-+                      }, "$search_path/." );
-     }
-     #chdir $cwd;
-     return @files;