Extend PPINCLUDE && PP(INCLUDE(...)) for INCLUDE PP Logic

[montymxb]

An extension of the work for #290, which focuses on the following additional behaviors of the INCLUDE pre-processor logic. Both ways of passing options to the INCLUDE pre-processor need to be handled, and should respect each other, but currently we're only handling the PP(INCLUDE) invocation approach (which can configure & invoke).

• PPINCLUDE('ID(-inc)') by itself should not activate the alternative, it also requires PP(INCLUDE) (no args)
• PPINCLUDE('ID(-inc)') should be equivalent to PP(INCLUDE('ID(-inc)'))
• PPINCLUDE('ID(-inc)') PP(INCLUDE('ID(++inc)')) is equiv to PP(INCLUDE('ID(-inc) ID(++inc)')), which reduces to PP(INCLUDE('ID(++inc)'))
• Options str is limited to 1k characters
• NOPPINCLUDE should disable the alternative, even when it was defined using PP

Additionally, it seems thatNOPP shouldn't clear options information information, but does indicate that we won't invoke a pre-processor.