CLSA-2023-1678135884 httpd: Fix of 2 CVEs

CVE-2022-37436: modproxy: HTTP response splitting - CVE-2006-20001: moddav: out-of-bounds read/write...

CLSA-2022-1668705928 httpd: Fix of 2 CVEs

CVE-2022-28614: handle large writes in aprputs - CVE-2022-29404: use a liberal default limit for LimitRequestBody of 1GB...

CLSA-2022-1648136281 Fixed CVEs in httpd: CVE-2022-22721, CVE-2022-22720

CVE-2022-22720: simpler connection close logic if discarding the request body fails - CVE-2022-22721: make sure and check that LimitXMLRequestBody fits in system memory...