worch: proper-way to define step_cwd for vcs
worch-test: fix destdir/prefix. use github.com/hwaf/hwaf-tests-worch-cjson instead of upstream's
worch: sync with upstream (5ddf10f)
all: declare_runtime_env -> hwaf_declare_runtime_env
all: declare_runtime_alias -> hwaf_declare_runtime_alias
all: declare_runtime_env -> hwaf_declare_runtime_env
all: define_uselib -> hwaf_define_uselib