urweb: add back openssl configure flags to fix build, cc @aseipp

Changed files
+2
pkgs
development
compilers
urweb
+2
pkgs/development/compilers/urweb/default.nix
···
sed -e 's@/usr/bin/file@${file}/bin/file@g' -i configure
'';
+
configureFlags = "--with-openssl=${openssl}";
+
preConfigure = ''
export PGHEADER="${postgresql}/include/libpq-fe.h";
export MSHEADER="${mysql.lib}/include/mysql/mysql.h";