Added Fedora patch to fix compilation.

Added python3 dependency as it seems it's needed now.

Replaced custom boost 1.73 patch with upstream one. Removed CFLAG that
was supposed to fix this but didn't do anything.

Removed nls.mk. telldus-core was fixed to not require iconv.

Signed-off-by: Rosen Penev <rosenp@gmail.com>