Pass -DLLDB_DISABLE_CURSES to the lldb-x86_64-debian bot

[labath]

Summary

Tests which require curses functionality are mysteriously failing on
this bot, even though the bot does have curses installed, and the tests
pass everywhere else.

This patch hard-disables curses functionality on this bot to prevent the
failing tests from being run.

[teemperor]

LGTM, thanks for getting the bots running again!

zorg/trunk/buildbot/osuosl/master/config/builders.py

return [
         {'name': "lldb-x86_64-debian",
          'slavenames': ["lldb-x86_64-debian"],
          'builddir': "lldb-x86_64-debian",
          'category' : 'lldb',
          'factory': LLDBBuilder.getLLDBCMakeBuildFactory(
                     test=True,
                     extra_cmake_args=['-DLLVM_ENABLE_ASSERTIONS=True',
                                       '-DLLVM_USE_LINKER=gold',
+                                      '-DLLDB_DISABLE_CURSES=True',
                                       '-DCMAKE_C_COMPILER=clang',
                                       '-DCMAKE_CXX_COMPILER=clang++'])},
         {'name': "lldb-aarch64-ubuntu",
          'slavenames': ["linaro-thx1-lldb-aarch64"],
          'builddir': "lldb-cmake-aarch64",
          'category' : 'lldb',
          'factory': LLDBBuilder.getLLDBCMakeBuildFactory(
                     test=True,