Notes for gcc-mingw-w64 - reproducible builds result

Version annotated: 17
Identified issues:
Identifier: captures_shell_variable_in_autofoo_script
Description Something looking like autotools is capturing SHELL for use at
runtime, which should probably be fixed to /bin/sh anyway.
Autotools also capturing the build path.

Our notes about issues affecting packages are stored in notes.git and are targeted at packages in Debian in 'unstable/amd64' (unless they say otherwise).