optional packages optional are not, figure out what's REALLY needed to build
Packages listed in building.md file as optional, in fact are required. cmake fails when they are missing:
CMake Error: The following variables are used in this project, but they are set to NOTFOUND. Please set them or make sure they are set and tested correctly in the CMake files: Readline_LIBRARIES (ADVANCED) linked by target "fc" in directory /home/hive/hive/libraries/fc -- Configuring incomplete, errors occurred!
For now I've moved the whole "optional" section to the list of required packages 91be750e
We should allow people to build just hived and/or cli_wallet without extra effort for tests, etc.