Remove redundant files and add tests for #504 bug

Author: crazywhalecc

src/SPC/builder/linux/library/icu.php

@@ -4,6 +4,8 @@
 
 namespace SPC\builder\linux\library;
 
+use SPC\store\FileSystem;
+
 class icu extends LinuxLibraryBase
 {
     use \SPC\builder\unix\library\icu;
@@ -36,5 +38,6 @@ protected function build(): void
             ->exec('make install');
 
         $this->patchPkgconfPrefix(['icu-i18n.pc', 'icu-io.pc', 'icu-uc.pc'], PKGCONF_PATCH_PREFIX);
+        FileSystem::removeDir(BUILD_LIB_PATH . '/icu');
     }
 }

src/SPC/builder/macos/library/icu.php

@@ -4,6 +4,8 @@
 
 namespace SPC\builder\macos\library;
 
+use SPC\store\FileSystem;
+
 class icu extends MacOSLibraryBase
 {
     use \SPC\builder\unix\library\icu;
@@ -20,5 +22,6 @@ protected function build(): void
             ->exec('make install');
 
         $this->patchPkgconfPrefix(['icu-i18n.pc', 'icu-io.pc', 'icu-uc.pc'], PKGCONF_PATCH_PREFIX);
+        FileSystem::removeDir(BUILD_LIB_PATH . '/icu');
     }
 }

src/globals/ext-tests/intl.php

@@ -3,3 +3,6 @@
 declare(strict_types=1);
 
 assert(class_exists(NumberFormatter::class));
+assert(function_exists('locale_get_default'));
+$fmt = new NumberFormatter('de-DE', NumberFormatter::DECIMAL);
+assert(strval($fmt->parse('1.100')) === '1100');