Added method Path::getDirname().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49352 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/System/Unix/Path.inc b/lib/System/Unix/Path.inc
index c3d06a3..fe2e3c6 100644
--- a/lib/System/Unix/Path.inc
+++ b/lib/System/Unix/Path.inc
@@ -277,16 +277,18 @@
 }
 
 
+std::string Path::getDirname() const { return getDirnameCharSep('/'); }
+
 std::string
 Path::getBasename() const {
   // Find the last slash
-  size_t slash = path.rfind('/');
+  std::string::size_type slash = path.rfind('/');
   if (slash == std::string::npos)
     slash = 0;
   else
     slash++;
 
-  size_t dot = path.rfind('.');
+  std::string::size_type dot = path.rfind('.');
   if (dot == std::string::npos || dot < slash)
     return path.substr(slash);
   else