Fixes queries for lsp

[inferrna]

• Fixed no type for freshly declared variable
• Nested typecheck for foo.bar.bas() constructions

This one is much better than #348
Now there is only two possible breaking changes:

1. LookupStruct now search inside gudttable
2. ProcessQuery is now returns bool. Otherwise the call to ProcessQuery in Compile was always unreachable because of the THROW_OR_ABORT call in the end of ProcessQuery . So now it is required to call it manually after ProcessQuery returns false.

Also no more annoying spaces, etc. But I kept ProcessDefinition as a separate function because of its recursive nature.

still may get some collisions (below it should be zk.d: int)

[aardappel]

reqret indicates if there is a surrounding expression that requires a return value of the current expression, what is the effect of checking this? I don't understand the comment.

[inferrna]

So can I use reqret==0 as an indicator that it is the last pass on this line?

[aardappel]

this will attempt to do the query in all lines following..

[inferrna]

I meant to fix this behavior:
For example you need to know about x here

let x = foo()

if you call ProcessQuery() on the first encounter of this line you will get undefined.
I try to call it on the last by checking reqret==0 or on one of the next lines. Looking more sane check n->line.line == query->qloc.line+1 isn't working if the next line is an empty one. I thought reqret==0 should be enough, but still not sure.

[aardappel]

I now finally understand what you're trying to do :)
reqret==0 will work under most circumstances but it is very shaky, there may be exceptions.
Just using > for the line comparison seems more robust, and should be sufficient.

[inferrna]

But how then will be queried the last line…) I searched for anything that would be the last line indicator, but nothing found.
As for now, reqret==0 is checked on the queried line, so there are two possible fails:

1. Early reqret==0. A little chance query to fail (found nothing).
2. No reqret==0 at all on this line. May be a problem if line is the last one. Can we have the last line without reqret==0 in it? If the answer is "No", then reqret==0 is still a solution.