CosmoMC modifications to include the actlite_3yr_v1 likelihood. 
The parameters reported in Dunkley et al. 2013 and Sievers et al. 2013 
are obtained with the CosmoMC January 2012 version.
===============================================================================

-------------------------------------------------------------------------------
1) source/cmbdata.F90
-------------------------------------------------------------------------------

<  logical :: init_MAP = .true.

>  logical :: init_MAP = .true.
>  logical :: init_highell = .true.


<   if (aname == 'MAP' .or. aname == 'WMAP') then
<     aset%name = 'WMAP'
<     datasets(num_datasets) = aset
<     return

>   if (aname == 'MAP' .or. aname == 'WMAP') then
>     aset%name = 'WMAP'
>     datasets(num_datasets) = aset
>     return
>   elseif (aname == 'Highell' ) then
>     aset%name = 'Highell'
>     datasets(num_datasets) = aset
>     return


<     if (datasets(i)%name == 'WMAP') then
<      tot(i) = MAPLnLike(szcl)
<     else

>     if (datasets(i)%name == 'WMAP') then
>      tot(i) = MAPLnLike(szcl)
>     else if (datasets(i)%name == 'Highell') then
>      tot(i) = HighellLnLike(cl)
>     else


< end module cmbdata

> function HighellLnLike(cl)
> #ifndef NOHIGHELL
>   use ACTlite_3yr_like
> #endif
>   real cl(lmax,num_cls_tot),HighellLnLike
>   real(8), dimension(lmax) :: cl_tt
> #ifndef NOHIGHELL
>   real(8)  :: like_act
>   integer  l

>   if (Init_highell) then
>       call act_likelihood_init
>   if (Feedback>0) write(*,*) 'reading ACT cmb data'
>       Init_highell = .false.
>   end if

>   cl_tt(2:lmax) = 0.d0
>   do l =2, tt_lmax
>      cl_tt(l) = cl(l,1)*l*(l+1)/twopi
>   enddo
>   like_act = 0.d0

>   call act_likelihood_compute(cl_tt,like_act)

>   HighellLnLike = like_act
>   write(*,*), ' ACT chi2 = ', 2*HighellLnLike
> #else
>    HighellLnLike==cl(2,1)
> #endif
>  end function

> end module cmbdata

-------------------------------------------------------------------------------
2) source/Makefile.F90
-------------------------------------------------------------------------------

< WMAP = "your WMAP likelihood path"

> WMAP = "your WMAP likelihood path"
> HIGHELL = "your ACT likelihood path"


< else
< F90FLAGS += -DNOWMAP
< endif

> else
> F90FLAGS += -DNOWMAP
> endif

> ifneq ($(HIGHELL),)
> F90FLAGS += $(IFLAG)$(cfitsio)/include $(IFLAG)$(HIGHELL)
> LINKFLAGS +=  -L$(cfitsio)/lib -L$(HIGHELL) -lcfitsio

> OBJFILES += $(HIGHELL)/ACTlite_3yr_like.o \

> else
> F90FLAGS += -DNOHighell
> endif


-------------------------------------------------------------------------------
3) params.ini
-------------------------------------------------------------------------------
> cmb_numdatasets = 2
> cmb_dataset1 = WMAP
> cmb_dataset2 = Highell