Inria CI: add -no-shared-libs to script

This option was specified in the Cygwin64 slave's configuration, but this
makes it impossible to use different values on differnet branches,
which is needed when switching to autoconf.

tools/ci/inria/main

@@ -128,6 +128,7 @@ case "${OCAML_ARCH}" in
     cleanup=true
     check_make_alldepend=true
     dorebase=true
+    confoptions="$confoptions -no-shared-libs "
   ;;
   mingw)
     instdir='C:/ocamlmgw'