common/build: do not pass $@ to make
load_package: do not fail(exit), but return 1 if package is unknown
fetch step removed, allow quiet step invocation
portz: --dry-run option added, setting portz_dry_run for inner scripts
pkginfo contain also prefix, exec_prefix and resolved CC/CXX paths
merge of '0d4acf517d6ccce8ad2ba4ed63406f71e739b24c'
     and '9ab4cf2e491cb4d0a6ebd46858f81ec55c0b6128'