Add some compiler features and documentation

[water111]

Turn on type checking for "memory places", but add an exception for putting a signed integer in an unsigned integer. Fix up some small type issues (pointers vs. uint32).

Add a debug option to compile and display assembly of the result.

Update the GOAL doc.

[coveralls]

Pull Request Test Coverage Report for Build 395190589

• 69 of 284 (24.3%) changed or added relevant lines in 19 files are covered.
• 7 unchanged lines in 3 files lost coverage.
• Overall coverage decreased (-0.2%) to 80.963%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
common/goos/TextDB.h	0	1	0.0%
goalc/compiler/CompilerException.h	0	1	0.0%
goalc/compiler/compilation/Block.cpp	0	3	0.0%
goalc/compiler/compilation/ControlFlow.cpp	1	4	25.0%
common/goos/TextDB.cpp	4	9	44.44%
goalc/compiler/compilation/Atoms.cpp	2	7	28.57%
goalc/compiler/Util.cpp	0	6	0.0%
goalc/compiler/Compiler.h	0	8	0.0%
goalc/compiler/compilation/Macro.cpp	0	8	0.0%
goalc/compiler/compilation/Define.cpp	3	13	23.08%

Files with Coverage Reduction	New Missed Lines	%
goalc/compiler/compilation/Define.cpp	1	89.19%
goalc/compiler/Compiler.cpp	1	55.21%
goalc/compiler/compilation/Debug.cpp	5	4.65%

Totals
Change from base Build 390495665:	-0.2%
Covered Lines:	17178
Relevant Lines:	21217

---

💛 - Coveralls

[water111]

Making some progress toward reasonable error messages! It's not perfect, but it's so much better than before:

  > (m "goal_src/kernel/gcommon.gc")
-- Compilation Error! --
The symbol asdf was looked up as a global variable, but it does not exist.
Form:
asdf
Location:
?
Code:
asdf
--------------------------------------------------------------------------------
Location:
?
Code:
(begin (label gensym9) asdf (if (or (eq? a b) (zero? a)) (return-from #f #t)) (s...
--------------------------------------------------------------------------------
Location:
text from /home/water/jak-project/goal_src/kernel/gcommon.gc, line: 256
  (until (eq? a object)
Code:
(until (eq? a object) asdf (if (or (eq? a b) (zero? a)) (return-from #f #t)) (se...
--------------------------------------------------------------------------------
REPL Error: Compilation Error