libfreerdp-core: fix asynchronous queueing of RemoteApp messages
setting pointers to NULL after freeing memory to avoid crashes.
gitignore: only top-level "external" folder is ignored.
Merge branch 'master' of git://github.com/awakecoding/FreeRDP
libwinpr-nt: stub more of the native file API
libwinpr-nt: fix conflict for NtCreateFile on Windows
libwinpr-wtsapi: fix build after changes to libwinpr-nt
Merge remote-tracking branch 'upstream/master'