FreeBSD 12.1 Clang11 & C++20/C++2a 1

boost 1.72.0_2
cryptopp 8.2.0
devil 1.7.8_25,1
googletest 1.10.0_1
lua 5.1+5.3
python 3.7
mariadb 10.5.4
subversion 1.14.0
makedepend 1.0.6,1
llvm-devel-11.0.d20200519
gcc10-devel-10.1.1.s20200620