STYLE: use lower case also for the ctest-specific commands, as in cmake

I hope I didn't make a typo anywhere, at least the tests still succeed

Alex

Source/CTest/cmCTestReadCustomFilesCommand.h

@@ -51,7 +51,7 @@ public:
   /**
    * The name of the command as specified in CMakeList.txt.
    */
-  virtual const char* GetName() { return "CTEST_READ_CUSTOM_FILES";}
+  virtual const char* GetName() { return "ctest_read_custom_files";}
 
   /**
    * Succinct documentation.
@@ -67,7 +67,7 @@ public:
   virtual const char* GetFullDocumentation()
     {
     return
-      "  CTEST_READ_CUSTOM_FILES( directory ... )\n"
+      "  ctest_read_custom_files( directory ... )\n"
       "Read all the CTestCustom.ctest or CTestCustom.cmake files from "
       "the given directory.";
     }