spellstrings: Add support for the variables:  - $bc2  - $bh  - $pa  - $pfi  - $pfr  - $ph  - $pn  - $ps  - $ps  - $pbh  - $pbhd  - $pl  - $sp  - $spa  - $spfi  - $spfr  - $sph  - $spn  - $sps
spellstrings: Add support for the variables:
 - $bc2
 - $bh
 - $pa
 - $pfi
 - $pfr
 - $ph
 - $pn
 - $ps
 - $ps
 - $pbh
 - $pbhd
 - $pl
 - $sp
 - $spa
 - $spfi
 - $spfr
 - $sph
 - $spn
 - $sps

spellstrings: Make variables case-insensitive

jleclanche/pywow,jleclanche/pywow,jleclanche/pywow,jleclanche/pywow,jleclanche/pywow,jleclanche/pywow