build: require libstdlog
use libstdlog for internal messages

Note that this is PoC and requires config parameters.
add "processInternalMessages" global config parameter
Merge branch 'v7-stable-stdlog' into v7-devel

Conflicts:
	runtime/glbl.c
	runtime/glbl.h
	tools/syslogd.c
Merge branch 'v7-devel'