flag -i (gInlineArchSwitch) has no effect for some languages

[crop2000]

-i only affects languages where this function can be true:

faust/compiler/parser/enrobage.cpp

Line 145 in 64b067b

static bool isFaustInclude(const string& line, string& fname)

would it make sense to restrict the -i flag use to languages where is can have a effect

faust/compiler/global.cpp

Line 1662 in 64b067b

// Check options coherency

right now i only know that it would have no effect when compiling to rust.