Fix argdumper build in cmake (OS X) after r228636

Previos version of this patch (see r229148) contained two errors:
* make_symlink_darwin_debug passes 2 arguments into make_symlink, but it required 4 arguments (was fixed by r229159)
* make_symlink doesn't work on OS X

As a quick fix, the r229148 and the r229159 were reverted. Now these errors are fixed.

Summary:
This patch fixes the following tests on OS X:

```
  FAIL: test_with_dsym (TestLaunchWithGlob.LaunchWithGlobTestCase)
  ----------------------------------------------------------------------
  Traceback (most recent call last):
    File "/Users/testuser/build/workspace/LLDB_master_release_OSX/llvm_master/tools/lldb/test/lldbtest.py", line 456, in wrapper
      return func(self, *args, **kwargs)
    File "/Users/testuser/build/workspace/LLDB_master_release_OSX/llvm_master/tools/lldb/test/functionalities/launch_with_glob/TestLaunchWithGlob.py", line 21, in test_with_dsym
      self.do_test ()
    File "/Users/testuser/build/workspace/LLDB_master_release_OSX/llvm_master/tools/lldb/test/functionalities/launch_with_glob/TestLaunchWithGlob.py", line 42, in do_test
      self.runCmd("process launch -G true -w %s -- fi*.tx?" % (os.getcwd()))
    File "/Users/testuser/build/workspace/LLDB_master_release_OSX/llvm_master/tools/lldb/test/lldbtest.py", line 1953, in runCmd
      msg if msg else CMD_MSG(cmd))
  AssertionError: False is not True : Command 'process launch -G true -w /Users/testuser/build/workspace/LLDB_master_release_OSX/llvm_master/tools/lldb/test/functionalities/launch_with_glob -- fi*.tx?' returns successfully
  Config=x86_64-clang
  ======================================================================
  FAIL: test_with_dwarf (TestLaunchWithGlob.LaunchWithGlobTestCase)
  ----------------------------------------------------------------------
  Traceback (most recent call last):
    File "/Users/testuser/build/workspace/LLDB_master_release_OSX/llvm_master/tools/lldb/test/lldbtest.py", line 473, in wrapper
      return func(self, *args, **kwargs)
    File "/Users/testuser/build/workspace/LLDB_master_release_OSX/llvm_master/tools/lldb/test/functionalities/launch_with_glob/TestLaunchWithGlob.py", line 28, in test_with_dwarf
      self.do_test ()
    File "/Users/testuser/build/workspace/LLDB_master_release_OSX/llvm_master/tools/lldb/test/functionalities/launch_with_glob/TestLaunchWithGlob.py", line 42, in do_test
      self.runCmd("process launch -G true -w %s -- fi*.tx?" % (os.getcwd()))
    File "/Users/testuser/build/workspace/LLDB_master_release_OSX/llvm_master/tools/lldb/test/lldbtest.py", line 1953, in runCmd
      msg if msg else CMD_MSG(cmd))
  AssertionError: False is not True : Command 'process launch -G true -w /Users/testuser/build/workspace/LLDB_master_release_OSX/llvm_master/tools/lldb/test/functionalities/launch_with_glob -- fi*.tx?' returns successfully
```

Reviewers: epertoso, emaste, abidh, clayborg, zturner

Reviewed By: clayborg

Subscribers: abidh, lldb-commits, emaste, epertoso, zturner, clayborg

Differential Revision: http://reviews.llvm.org/D7550

llvm-svn: 229517

lldb/scripts/Python/finish-swig-Python-LLDB.sh

@@ -167,6 +167,7 @@ else
     fi
 fi
 
+# Make symlink for darwin-debug on Darwin
 if [ ${OS_NAME} = "Darwin" ] && [ $MakefileCalled -ne 0 ]
 then
     # We are being built by CMake on Darwin
@@ -187,6 +188,27 @@ then
     fi
 fi
 
+# Make symlink for argdumper on any platform
+if [ $MakefileCalled -ne 0 ]
+then
+    # We are being built by CMake
+
+    if [ ! -L "${framework_python_dir}/argdumper" ]
+    then
+        if [ $Debug -eq 1 ]
+        then
+            echo "Creating symlink for argdumper"
+        fi
+        cd "${framework_python_dir}"
+        ln -s "../../../../bin/argdumper" argdumper
+    else
+        if [ $Debug -eq 1 ]
+        then
+            echo "${framework_python_dir}/argdumper already exists."
+        fi
+    fi
+fi
+
 create_python_package () {
     package_dir="${framework_python_dir}$1"
     package_files="$2"