lit: Rename the valgrind leaks feature to match what is currently used

(vg_leak).

llvm-svn: 166306

llvm/docs/CommandGuide/lit.rst

@@ -140,7 +140,7 @@ EXECUTION OPTIONS
 **--vg-leak**
 
  When *--vg* is used, enable memory leak checks. When this option is enabled,
- **lit** will also automatically provide a "valgrind-leaks" feature that can be
+ **lit** will also automatically provide a "vg_leak" feature that can be
  used to conditionally disable (or expect failure in) certain tests.
 
 

llvm/utils/lit/lit/TestingConfig.py

@@ -34,7 +34,7 @@ class TestingConfig:
             if litConfig.useValgrind:
                 available_features.append('valgrind')
                 if litConfig.valgrindLeakCheck:
-                    available_features.append('valgrind-leaks')
+                    available_features.append('vg_leak')
 
             config = TestingConfig(parent,
                                    name = '<unnamed>',