Remove nativecodegen as it forces the native target libraries to be linked in regardless of whether the target was specified in LLVM_TARGETS_TO_BUILD

git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@201519 91177308-0d34-0410-b5e6-96231b3b80d8
Fix the LLDB prompt for older Editline versions, specifically running on Ubuntu 12.04

git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@201521 91177308-0d34-0410-b5e6-96231b3b80d8
Fix Windows build, broken by the inclusion of sys/ioctl.h and isatty()

git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@201522 91177308-0d34-0410-b5e6-96231b3b80d8
Replaced custom variable arguments to standard library for correcting 64 bit Windows build

git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@201523 91177308-0d34-0410-b5e6-96231b3b80d8