User-defined compile option overrides

Temporary fix. This should eventually be set in the UM source directory.

Script Modifications

UM assumed old version of ksh is used. Thus, something of the form:

echo "Hello\nThere"

is spread over two lines. With newer versions of the shell

echo -e "Hello\nThere"

would be required, otherwise the \n is not interpreted.

Lots of the compile scripts assume the old functionality. A quick and dirty solution is to install mksh, and adjust the scripts invocation paths like so:

ksh_smod.mod