Merge branch 'master' into sender

Conflicts:
	Build.PL
	lib/Slic3r.pm
	xs/MANIFEST
	xs/src/libslic3r/PrintConfig.hpp

Build.PL

@@ -8,7 +8,8 @@ use File::Spec;
 
 my %prereqs = qw(
     Devel::CheckLib                 0
-    Encode::Locale                  0
+    Encode                          0
+    Encode::Locale                  1.05
     ExtUtils::MakeMaker             6.80
     ExtUtils::ParseXS               3.22
     File::Basename                  0
@@ -24,6 +25,7 @@ my %prereqs = qw(
     IO::Scalar                      0
     threads                         1.96
     Time::HiRes                     0
+    Unicode::Normalize              0
 );
 my %recommends = qw(
     Class::XSAccessor               0
@@ -119,7 +121,11 @@ EOF
     foreach my $module (sort keys %modules) {
         my $version = $modules{$module};
         my @cmd = ($cpanm, @cpanm_args);
-        push @cmd, '--notest', if $module eq 'OpenGL';  # temporary workaround for upstream bug in test
+        
+        # temporary workaround for upstream bug in test
+        push @cmd, '--notest'
+            if $module =~ /^(?:OpenGL|Math::PlanePath|Test::Harness)$/;
+        
         push @cmd, "$module~$version";
         if ($module eq 'XML::SAX::ExpatXS' && $^O eq 'MSWin32') {
             my $mingw = 'C:\dev\CitrusPerl\mingw64';