update comments

Author: Samuel Moors

easybuild/easyblocks/a/amber.py

@@ -128,7 +128,7 @@ def configure_step(self):
             return
 
         # CMake will search a previous install directory for Amber-compiled libs. We will therefore
-        # manually empty the install directory prior to configuration.
+        # manually clean the install directory prior to configuration.
         clean_dir(self.installdir)
 
         external_libs_list = []

easybuild/easyblocks/generic/tarball.py

@@ -109,9 +109,9 @@ def install_step(self, src=None):
             install_path = self.installdir
             install_logmsg = "Merging tarball contents of %s into %s..."
         elif self.cfg['install_type'] is None:
-            # Empty and copy root of installation directory (default)
+            # Clean and copy root of installation directory (default)
             install_path = self.installdir
-            install_logmsg = "Copying tarball contents of %s into %s after emptying it..."
+            install_logmsg = "Copying tarball contents of %s into %s after cleaning it..."
             clean_dir(install_path)
         else:
             raise EasyBuildError("Unknown option '%s' for index_type.", self.cfg['install_type'])