Some test portability fixes again + minor changes

Makefile.PL

@@ -2,7 +2,7 @@ use ExtUtils::MakeMaker;
 use Config;
 
 os_unsupported if $^O eq 'MSWin32'; # I don't know on which OS'es the code will work exactly, but this one I can easily rule out.
-os_unsupported if $Config{ivsize} < 8;
+os_unsupported if $Config{ptrsize} < 8;
 os_unsupported if $Config{usequadmath};
 
 WriteMakefile(
@@ -15,12 +15,16 @@ WriteMakefile(
     MIN_PERL_VERSION => 'v5.36',
     META_MERGE => {
         dynamic_config => 0,
+        'meta-spec' => { version => 2 },
         resources => {
-            repository => 'https://code.blicky.net/yorhel/fu',
-            bugtracker => 'https://code.blicky.net/yorhel/fu/issues',
-        },
-        no_index => {
-            file => 'bench.PL',
+            repository => {
+                web => 'https://code.blicky.net/yorhel/fu',
+                type => 'git',
+            },
+            bugtracker => {
+                web => 'https://code.blicky.net/yorhel/fu/issues',
+                mailto => 'projects@yorhel.nl',
+            },
         },
     },
     depend => { '$(OBJECT)', 'c/*.c' },