Remove ASCII chars outside of 32-127 range

[davegill]

TYPE: text only

KEYWORDS: ASCII

SOURCE: internal

DESCRIPTION OF CHANGES:
Remove instances of non Fortran character set entries in the WRF source. All of these changes are comments.

1. The \textemdash becomes "-"
2. The non-American keyboard letters become a, e, i, o, u without the dots or accents
3. The superscript 2 is removed, and replaced by a regular 2: W/m2
4. Extra DOS carriage returns are removed (likely when the files come from windows machines)
5. The degree symbol was removed
6. An extra handy vim command was added

LIST OF MODIFIED FILES:
modified: chem/chemics_init.F
modified: chem/module_mosaic_newnucb.F
modified: hydro/Routing/module_gw_gw2d.F
modified: phys/module_fr_fire_phys.F
modified: phys/module_gocart_coupling.F
modified: phys/module_mp_fast_sbm.F
modified: phys/module_mp_gsfcgce_4ice_nuwrf.F
modified: phys/module_mp_ntu.F
modified: phys/module_ra_eclipse.F
modified: phys/module_sf_bep_bem.F
modified: phys/module_sf_noahmplsm.F
modified: share/module_check_a_mundo.F
modified: tools/non_ascii_finder.F

TESTS CONDUCTED:

1. Text only, no changes to compiled code
2. Jenkins is all PASS

[davegill]

@weiwangncar
Wei,
Here is the PR with the check on the ASCII range. This includes the NTU init mods. These changes are all comments.