message: [cmake] Remove the test for libstdc++<4.9
  It is no longer relevant now that llvm requires >=5.1.
diff: @@ -437,28 +437,6 @@ if (NOT LLDB_DISABLE_CURSES)
  include_directories(${CURSES_INCLUDE_DIR})
  endif ()
  -check_cxx_symbol_exists("__GLIBCXX__" "string" LLDB_USING_LIBSTDCXX)
  -if(LLDB_USING_LIBSTDCXX)
  - # There doesn't seem to be an easy way to check the library version. Instead, we rely on the
  - # fact that std::set did not have the allocator constructor available until version 4.9
  - check_cxx_source_compiles("
  - #include <set>
  - std::set<int> s = std::set<int>(std::allocator<int>());
  - int main() { return 0; }"
  - LLDB_USING_LIBSTDCXX_4_9)
  - if (NOT LLDB_USING_LIBSTDCXX_4_9 AND NOT LLVM_ENABLE_EH)
  - message(WARNING
  - "You appear to be linking to libstdc++ version lesser than 4.9 without exceptions "
  - "enabled. These versions of the library have an issue, which causes occasional "
  - "lldb crashes. See <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59656> for "
  - "details. Possible courses of action are:\n"
  - "- use libstdc++ version 4.9 or newer\n"
  - "- use libc++ (via LLVM_ENABLE_LIBCXX)\n"
  - "- enable exceptions (via LLVM_ENABLE_EH)\n"
  - "- ignore this warning and accept occasional instability")
  - endif()
  -endif()
  -
  if ((CMAKE_SYSTEM_NAME MATCHES "Android") AND LLVM_BUILD_STATIC AND
  ((ANDROID_ABI MATCHES "armeabi") OR (ANDROID_ABI MATCHES "mips")))
  add_definitions(-DANDROID_USE_ACCEPT_WORKAROUND)
  