[compiler] fix warnings in repl lib and add macros to autocomplete

[water111]

I switched replxx to a shared library because the static library seemed to be causing problems on the Mac OS branch.

[coveralls]

Pull Request Test Coverage Report for Build 643638708

• 16 of 43 (37.21%) changed or added relevant lines in 6 files are covered.
• 3 unchanged lines in 2 files lost coverage.
• Overall coverage increased (+0.07%) to 68.497%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
game/graphics/display.cpp	0	1	0.0%
common/goos/Interpreter.cpp	0	4	0.0%
goalc/compiler/Compiler.cpp	0	4	0.0%
goalc/compiler/compilation/CompilerControl.cpp	7	14	50.0%
common/goos/Reader.cpp	0	11	0.0%

Files with Coverage Reduction	New Missed Lines	%
common/goos/ReplUtils.cpp	1	0%
goalc/compiler/compilation/CompilerControl.cpp	2	35.67%

Totals
Change from base Build 638153658:	0.07%
Covered Lines:	31812
Relevant Lines:	46443

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💛 - Coveralls