[perl #49001] [PROPOSAL][DOCS] Change word "compilation_unit" into something else (like "sub")

Yes, PDD 19 can talk about 'subroutines' rather than 'compilation
units'. (I just did a quick skim of the file, and a simple search and
replace changing 'compilation unit' to 'subroutine' will work fine.)

In imcc.y, change 'compilation_unit' and 'compilation_units' to
something more general like 'element', 'component', 'segment', etc...
(Not 'statement' but it's basically filling the same purpose as the
'statement' rule in an HLL.)

• [perl #49001] [PROPOSAL][DOCS] Change word "compilation_unit" into something else (like "sub") by Allison Randal via RT