Expose SBPlatform through the public API.

Example code:

remote_platform = lldb.SBPlatform("remote-macosx"); 
remote_platform.SetWorkingDirectory("/private/tmp")
debugger.SetSelectedPlatform(remote_platform)

connect_options = lldb.SBPlatformConnectOptions("connect://localhost:1111"); 
err = remote_platform.ConnectRemote(connect_options)
if err.Success():
    print >> result, 'Connected to remote platform:'
    print >> result, 'hostname: %s' % (remote_platform.GetHostname())
    src = lldb.SBFileSpec("/Applications/Xcode.app/Contents/SharedFrameworks/LLDB.framework", False)
    dst = lldb.SBFileSpec()
    # copy src to platform working directory since "dst" is empty
    err = remote_platform.Install(src, dst);
    if err.Success():
        print >> result, '%s installed successfully' % (src)
    else:
        print >> result, 'error: failed to install "%s": %s' % (src, err)


Implemented many calls needed in lldb-platform to be able to install a directory that contains symlinks, file and directories.

The remote lldb-platform can now launch GDB servers on the remote system so that remote debugging can be spawned through the remote platform when connected to a remote platform.

The API in SBPlatform is subject to change and will be getting many new functions.

llvm-svn: 195273
diff --git a/lldb/source/Core/Module.cpp b/lldb/source/Core/Module.cpp
index 3f3be93..f90a097 100644
--- a/lldb/source/Core/Module.cpp
+++ b/lldb/source/Core/Module.cpp
@@ -135,6 +135,7 @@
     m_uuid (),
     m_file (module_spec.GetFileSpec()),
     m_platform_file(module_spec.GetPlatformFileSpec()),
+    m_remote_install_file(),
     m_symfile_spec (module_spec.GetSymbolFileSpec()),
     m_object_name (module_spec.GetObjectName()),
     m_object_offset (module_spec.GetObjectOffset()),
@@ -179,6 +180,7 @@
     m_uuid (),
     m_file (file_spec),
     m_platform_file(),
+    m_remote_install_file (),
     m_symfile_spec (),
     m_object_name (),
     m_object_offset (object_offset),