Back out part of bug 707021, the obsolete "-MANIFESTUAC:NO" workaround appears to actually be necessary.

configure.in

@@ -577,10 +577,12 @@ case "$target" in
             AC_DEFINE(_CRT_NONSTDC_NO_DEPRECATE)
         elif test "$_CC_MAJOR_VERSION" = "15"; then
             _CC_SUITE=9
+            LDFLAGS="$LDFLAGS -MANIFESTUAC:NO"
             AC_DEFINE(_CRT_SECURE_NO_WARNINGS)
             AC_DEFINE(_CRT_NONSTDC_NO_WARNINGS)
         elif test "$_CC_MAJOR_VERSION" = "16"; then
             _CC_SUITE=10
+            LDFLAGS="$LDFLAGS -MANIFESTUAC:NO"
             AC_DEFINE(_CRT_SECURE_NO_WARNINGS)
             AC_DEFINE(_CRT_NONSTDC_NO_WARNINGS)
         elif test "$_CC_MAJOR_VERSION" = "17"; then