Do not normalize platformio.***_dir path when validating

Author: ivankravets

platformio/project/options.py

@@ -87,7 +87,8 @@ def validate_dir(path):
         return path
     if path.startswith("~"):
         path = fs.expanduser(path)
-    return os.path.abspath(path)
+    return path
+    # return os.path.abspath(path)
 
 
 def get_default_core_dir():