FIX: Clean up matching and parsing
FIX: Clean up matching and parsing

Rename parse_field() to match_field() and parse_field_promisc() to
parse_field() to use more typical parser terminology in the FIX code.

Saves me from looking up what parse_field_promisc() does every time I
read the code...

Signed-off-by: Pekka Enberg <add4fcd06328a394f0ad91feda7ee057316dc5ed@iki.fi>

svdev/libtrading,libtrading/libtrading,Bitcoinsulting/libtrading,penberg/libtrading,jvirtanen/libtrading,jvirtanen/libtrading,divaykin/libtrading,fengzhyuan/libtrading,femtotrader/libtrading,svdev/libtrading,fengzhyuan/libtrading,libtrading/libtrading,divaykin/libtrading,mstanichenko/libtrading,Bitcoinsulting/libtrading,etoestja/libtrading,femtotrader/libtrading,etoestja/libtrading,mstanichenko/libtrading,NunoEdgarGub1/libtrading,penberg/libtrading,NunoEdgarGub1/libtrading