Add support for WH3081 Fine Offset based weather stations.

Multiple, significant changes:
 - add protocol support for WH3081 climate packet
 - add protocol support for WH3081 solar packet
 - add protocol configuration for sync bit
 - change demod bit output to match analyse output

Build changes:
 - remove unused/unneeded executables from compile
 - change default compile to optimise for size
 - probably broke WIN32 support, have not checked
 - adjust gcc warnings to get a clean compile