Add two utility functions:

    o get_parent_frame(frame)
    o get_args_as_string(frame)

to lldbutil.py and create TestFrameUtils.py to exercise the utils.
Plus re-arrange the test/python_api/lldbutil to have three directories
for testing iteration, process stack traces, and the just added frame utils.


git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@131213 91177308-0d34-0410-b5e6-96231b3b80d8
11 files changed