Update FENGSHA and dust schemes

[bbakernoaa]

This PR address #9

Major changes are:

• Update to all dust schemes to allow an arbitrary number of bins in each of the schemes
• Code cleanup for each of the dust schemes
• Update fengsha to the latest version used in the UFS, i.e. RRFS-SD, AQM, and UFS-Aerosols

[bbakernoaa]

@jianheACM @jordanschnell @zmoon Please take another look at this. Fixed it up and is producing the same results.

@jordanschnell I updated the all the dust schemes to pass the tendencies out and then update in the catchem_dust_driver. Please take a look.

[bbakernoaa]

I have a sample run on HERA here: /scratch2/NCEPDEV/stmp3/Barry.Baker/COMROT/test2/gfs.20160715

[bbakernoaa]

@rschwant @jordanschnell @jianheACM @zmoon Please take another look at this we need to move forward

[jordanschnell]

@jianheACM @jordanschnell @zmoon Please take another look at this. Fixed it up and is producing the same results.

@jordanschnell I updated the all the dust schemes to pass the tendencies out and then update in the catchem_dust_driver. Please take a look.

This part looks good to me. As I mentioned and @zmoon noted, would be good to have a single line to add the emissions but I recognize there are slight differences so all good for now.