Merge branch '2058_openssl_libdir' into 'release-7.2'

Fix installation of libssl during the Superbuild

See merge request orfeotoolbox/otb!743

SuperBuild/CMake/External_openssl.cmake

@@ -77,6 +77,7 @@ else(UNIX)
     ${SB_ENV_CONFIGURE_CMD}
     ${OPENSSL_SB_SRC}/config ${OPENSSL_BUILD_ARCH}
     "--prefix=${SB_INSTALL_PREFIX}"
+    "--libdir=lib"
     shared
     zlib
     zlib-dynamic