Create "thin" memory footprint version of CSpice

[gkjohnson]

Produce a "thin" version of the CSpice.js file by adjusting Fortran constants.

See high level information on building CSpice from the Fortran source here.

The following files represent a particularly large portion of the statically allocated memory in no specific order. Data size could be reduced in these files:

ckbsr.c
daffa.c
dskx02.c
pool.c
sc01.c
spkbsr.c
zzddhman.c
zzdskbsr.c
zzdsksbf.c
zzekjsrt.c
zzeksca.c

Related to #34