Fixed CVEs in httpd: CVE-2022-31813, CVE-2022-28615, CVE-2022-26377

CVE-2022-26377: modproxyajp: fix HTTP request smuggling - CVE-2022-28615: fix possible out-of-bounds read in apstrcmpmatch - CVE-2022-31813: modproxy: preserve original request headers so an upstream knows what the original request hostname was, and so send X-Forwarded- headers correctly...