ENH: Teach CTest to handle Mercurial repositories

This creates cmCTestHG to drive CTest Update handling on hg-based work
trees.  Currently we always update to the head of the remote tracking
branch (hg pull), so the nightly start time is ignored for Nightly
builds.  A later change will address this.

See issue #7879.  Patch from Emmanuel Christophe.  I modified the patch
slightly for code style, to finish up some parsing details, and to fix
the test.

1 files changed, 1 insertions, 0 deletions

diff --git a/Source/CTest/cmCTestUpdateHandler.h b/Source/CTest/cmCTestUpdateHandler.h
index 139ceed..f1e76f8 100644
--- a/Source/CTest/cmCTestUpdateHandler.h
+++ b/Source/CTest/cmCTestUpdateHandler.h
@@ -48,6 +48,7 @@ public:
     e_SVN,
     e_BZR,
     e_GIT,
+    e_HG,
     e_LAST
   };