Change all size tests to use Linux EOL

Previously they'd use the EOL of the platform they were run on, which
led to discrepancies on Windows like emscripten-core#20530.

Author: RReverser

test/other/metadce/test_metadce_cxx_ctors1.size

@@ -1 +1 @@
-123550
+123556

test/other/metadce/test_metadce_cxx_ctors2.size

@@ -1 +1 @@
-123455
+123461

test/other/metadce/test_metadce_cxx_except.size

@@ -1 +1 @@
-166372
+166378

test/other/metadce/test_metadce_cxx_except_wasm.size

@@ -1 +1 @@
-137165
+137171

test/other/metadce/test_metadce_cxx_mangle.size

@@ -1 +1 @@
-221307
+221315

test/test_other.py

@@ -8055,23 +8055,23 @@ def test_unoptimized_code_size(self):
     # under control to a certain extent.  This test allows us to track major
     # changes to the size of the unoptimized and unminified code size.
     # Run with `--rebase` when this test fails.
-    self.build(test_file('hello_world.c'), emcc_args=['-O0'])
+    self.build(test_file('hello_world.c'), emcc_args=['-O0', '--output_eol=linux'])
     self.check_expected_size_in_file('wasm',
                                      test_file('other/test_unoptimized_code_size.wasm.size'),
                                      os.path.getsize('hello_world.wasm'))
     self.check_expected_size_in_file('js',
                                      test_file('other/test_unoptimized_code_size.js.size'),
                                      os.path.getsize('hello_world.js'))
 
-    self.build(test_file('hello_world.c'), emcc_args=['-O0', '-sASSERTIONS=0'], output_basename='no_asserts')
+    self.build(test_file('hello_world.c'), emcc_args=['-O0','--output_eol=linux', '-sASSERTIONS=0'], output_basename='no_asserts')
     self.check_expected_size_in_file('wasm',
                                      test_file('other/test_unoptimized_code_size_no_asserts.wasm.size'),
                                      os.path.getsize('no_asserts.wasm'))
     self.check_expected_size_in_file('js',
                                      test_file('other/test_unoptimized_code_size_no_asserts.js.size'),
                                      os.path.getsize('no_asserts.js'))
 
-    self.build(test_file('hello_world.c'), emcc_args=['-O0', '-sSTRICT'], output_basename='strict')
+    self.build(test_file('hello_world.c'), emcc_args=['-O0', '--output_eol=linux', '-sSTRICT'], output_basename='strict')
     self.check_expected_size_in_file('wasm',
                                      test_file('other/test_unoptimized_code_size_strict.wasm.size'),
                                      os.path.getsize('strict.wasm'))
@@ -8089,7 +8089,7 @@ def run_metadce_test(self, filename, args=[], expected_exists=[], expected_not_e
     expected_basename = test_file('other/metadce', self.id().split('.')[-1])
 
     # Run once without closure and parse output to find wasmImports
-    build_cmd = [compiler_for(filename), filename] + args + self.get_emcc_args()
+    build_cmd = [compiler_for(filename), filename, '--output_eol=linux'] + args + self.get_emcc_args()
     self.run_process(build_cmd + ['-g2'])
     # find the imports we send from JS
     # TODO(sbc): Find a way to do that that doesn't depend on internal details of
@@ -10935,11 +10935,10 @@ def test_main_reads_params(self):
 
   def test_INCOMING_MODULE_JS_API(self):
     def test(args):
-      self.run_process([EMCC, test_file('hello_world.c'), '-O3', '--closure=1', '-sENVIRONMENT=node,shell'] + args)
+      self.run_process([EMCC, test_file('hello_world.c'), '-O3', '--closure=1', '-sENVIRONMENT=node,shell', '--output_eol=linux'] + args)
       for engine in config.JS_ENGINES:
         self.assertContained('hello, world!', self.run_js('a.out.js', engine=engine))
-      # ignore \r which on windows can increase the size
-      return len(read_file('a.out.js').replace('\r', ''))
+      return os.path.getsize('a.out.js')
     normal = test([])
     changed = test(['-sINCOMING_MODULE_JS_API=[]'])
     print('sizes', normal, changed)