Continue cleanup of LIT, getting rid of the remaining artifacts from dejagnu
* Removed test/lib/llvm.exp - it is no longer needed
* Deleted the dg.exp reading code from test/lit.cfg. There are no dg.exp files
left in the test suite so this code is no longer required. test/lit.cfg is
now much shorter and clearer
* Removed a lot of duplicate code in lit.local.cfg files that need access to
the root configuration, by adding a "root" attribute to the TestingConfig
object. This attribute is dynamically computed to provide the same
information as was previously provided by the custom getRoot functions.
* Documented the config.root attribute in docs/CommandGuide/lit.pod
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153408 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/CommandGuide/lit.pod b/docs/CommandGuide/lit.pod
index e0b1a8c..5eeee11 100644
--- a/docs/CommandGuide/lit.pod
+++ b/docs/CommandGuide/lit.pod
@@ -301,6 +301,9 @@
B<parent> The parent configuration, this is the config object for the directory
containing the test suite, or None.
+B<root> The root configuration. This is the top-most B<lit> configuration in
+the project.
+
B<on_clone> The config is actually cloned for every subdirectory inside a test
suite, to allow local configuration on a per-directory basis. The I<on_clone>
variable can be set to a Python function which will be called whenever a