Fixed configure-based build on OS X.

This change adds a missing include path to the
ObjC LanguageRuntime path to the MacOSX SystemRuntime
plugin's Makefile.

It also adds the panel and curses library to the liblldb
shared library linkage step.

Changes by Jevin Sweval with a minor tweak.


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@202547 91177308-0d34-0410-b5e6-96231b3b80d8