Include file auto-completion does not consider current directory

[dfszb]

The auto-completion works with include files in the include path. It does not seem to consider files in the current directory.

To Reproduce Type:

include "

and then invoke company-complete. It will not consider files in the current directory.

Expected behavior It should consider files relative to the current source directory, too.

Environment (please complete the following information):

• OS/Version: Arch Linux
• RTags(rdm,rc): build from 2019.12.03 master
• Emacs: 26.3
• LLVM/Clang: 9.0.0