initial work on threaded fcgi server
wip, broken, etc.
Merge branch 'master' into feature/fcgi
wip, still...
libbalde/fcgi: fixed sinal handling
libbalde/fcgi: only handle unix signals if the headers are available
Revert partially "libbalde/fcgi: only handle unix signals if the headers are available"

This partially reverts commit 60af9a00a0463120eb413c2b6c7993dcfe72165a.
fixed application runner
Merge branch 'master' into feature/fcgi

Conflicts:
	libbalde/app.c
fixed fcgi
fixed httpd
Merge branch 'master' into feature/fcgi

Conflicts:
	libbalde/app.c
Merge branch 'master' into feature/fcgi
Merge branch 'master' into feature/fcgi
trying to improve thread-safetyness
most app stuff should be read-only in request context
libbalde/app: added "before request" hooks
fixed BALDE_APP_READ_ONLY macro