Found problem - Max City Size to 102

[dennis_caver]

The max city size was shipped at 60. One issue with
this is that the Hospital city improvement does not
increase max city size as stated in both manuals.
So add a max city statement for Hospital in buildings
.txt and adjust arcologies and aqua filter.

I recommend the following max city sizes to get to
a max of 102.

Initial 18

Aqueduct 14 (N/C)
Hospital 17
Arcologies 25
Aqua filter 28

Also one will have to adjust the 'overcrowding'
parameter for each transition. For instance, I adjusted
them so that a little 'red growth' remained after each
transition after city size 19. (Except body exchange)
Note: This includes adjusting 'Drug store' and '
Incubation center'.

Dennis