Coerce if_loop.c in the general direction of style(9):
Coerce if_loop.c in the general direction of style(9):

- Use ANSI function declarations
- Remove use of 'register' keyword
- Prefer style(9) return parens, white space

MFC after:	1 month

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase