CLSA-2021-1635459129 Fix CVE(s): CVE-2021-26690, CVE-2021-26691, CVE-2021-30641, CVE-2020-35452

SECURITY UPDATE: Unexpected URL matching with 'MergeSlashes OFF' - debian/patches/CVE-2021-30641.patch: legacy default slash-matching behavior with 'MergeSlashes OFF'. - CVE-2021-30641 SECURITY UPDATE: heap overflow in modsession - debian/patches/CVE-2021-26691.patch: A specially crafted...