armbian-oleg: split hostdeps again, full of ifs, and reduce the minimum set of pkgs for Oleg-conditions while trying to keep Docker full

- probably breaks a lot of stuff; c++ compilers, distcc, possibly others
- split into late_prepare_host_dependencies / early_prepare_host_dependencies calling adaptative_prepare_host_dependencies() full of if's

also:
- calc deps out of configuration
- reorg checks into obtain_and_check_host_release_and_arch()

lib/functions/cli/cli-requirements.sh

@@ -17,7 +17,10 @@ function cli_requirements_pre_run() {
 function cli_requirements_run() {
 	initialize_extension_manager # initialize the extension manager.
 	declare -a -g host_dependencies=()
-	early_prepare_host_dependencies
+	
+	obtain_and_check_host_release_and_arch # Sets HOSTRELEASE & validates it for sanity; also HOSTARCH
+	host_release="${HOSTRELEASE}" host_arch="${HOSTARCH}" early_prepare_host_dependencies
+	
 	LOG_SECTION="install_host_dependencies" do_with_logging install_host_dependencies "for requirements command"
 	LOG_SECTION="prepare_pip_packages_for_python_tools" do_with_logging prepare_pip_packages_for_python_tools
 	display_alert "Done with" "@host dependencies" "cachehit"