mod_php_install.sh: add support for xmlrpc extension.

mod_php_install.sh

@@ -199,7 +199,8 @@ _required_base_packages="$_required_base_packages
    libsctp-dev
    libcrypto++-dev
    libzip-dev
-   libharfbuzz-dev"
+   libharfbuzz-dev
+   libxmlrpc-epi-dev"
 
 # - Package libgraphicsmagick++3 is not available at ubunru 18.04"
 # -
@@ -2085,7 +2086,8 @@ config_params="
    --with-ldap=shared
    --with-xsl
    --with-mhash
-   --enable-cgi"
+   --enable-cgi
+   --with-xmlrpc"
 
 # --with-t1lib \