Install composer viea phive and remove phpunit from composer dev install

Update comoser test files to work with both, but primary is the phive
installed one.

run tests via 4dev/check/phpunit.sh as before

4dev/checking/phpstan.sh

@@ -1,3 +1,3 @@
 base="/storage/var/www/html/developers/clemens/core_data/php_libraries/trunk/";
 # must be run in ${base}www/
-phpstan
+$(cd "${base}"; phpstan);