relax SVN archive

The external variable *num_times, the number of relaxation times, has been added and is part of the
setup function argument list. The statement '#define MAXTIMES 30' has been added to the header.

The 'func' function has been updated.

The variables in the header have been sorted.

The compilation of the module has changed. Now the C files are compiled into object code *.o and
all the relaxation curve fitting code is linked into a single *.so file. These changes have been to
'maths_fns/Makefile'.

The base directory makefile has had it's goal modified to properly handle recursive making.