Update Glob code to fix deprecation warnings

Author: tomlokhorst

Sources/RswiftParsers/Shared/Glob.swift

@@ -209,7 +209,7 @@ public class Glob: Collection {
         let includeDirectories = behavior.includesDirectoriesInResults
 
         for i in 0..<Int(gt.gl_pathc) {
-            if let path = String(validatingUTF8: gt.gl_pathv[i]!) {
+            if let path = String(validatingCString: gt.gl_pathv[i]!) {
                 if !includeFiles || !includeDirectories {
                     let isDirectory = self.isDirectory(path: path)
                     if (!includeFiles && !isDirectory) || (!includeDirectories && isDirectory) {

Tests/RswiftParsersTests/GlobTests.swift

@@ -43,7 +43,7 @@ class GlobTests : XCTestCase {
 
   private func newTmpDir() -> String {
     var tmpDirTmpl = "/tmp/glob-test.XXXXX".cString(using: .utf8)!
-    return String(validatingUTF8: mkdtemp(&tmpDirTmpl))!
+    return String(validatingCString: mkdtemp(&tmpDirTmpl))!
   }
 
   func testBraces() {