[lldb/Lua] Fix override/virtual in ScriptInterpreterLua (NFC)

[lldb/Reproducers] Collect files imported by command script import

Files imported by the script interpreter aren't opened by LLDB so they
don't end up in the reproducer. The solution is to explicitl

[lldb/Reproducers] Collect files imported by command script import

Files imported by the script interpreter aren't opened by LLDB so they
don't end up in the reproducer. The solution is to explicitly add them
to the FileCollector.

Differential revision: https://reviews.llvm.org/D76626

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[lldb/Plugin] s/LLDB_PLUGIN/LLDB_PLUGIN_DEFINE/ (NFC)

Rename LLDB_PLUGIN to LLDB_PLUGIN_DEFINE as Pavel suggested in D73067 to
avoid name conflict.

[LLDB] Fix GCC warnings about extra semicolons. NFC.

[lldb/Plugins] Use external functions to (de)initialize plugins

This is a step towards making the initialize and terminate calls be
generated by CMake, which in turn is towards making it possible to

[lldb/Plugins] Use external functions to (de)initialize plugins

This is a step towards making the initialize and terminate calls be
generated by CMake, which in turn is towards making it possible to
disable plugins at configuration time.

Differential revision: https://reviews.llvm.org/D74245

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[lldb][NFC] Fix all formatting errors in .cpp file headers

Summary:
A *.cpp file header in LLDB (and in LLDB) should like this:
```
//===-- TestUtilities.cpp ----------------------------------------

[lldb][NFC] Fix all formatting errors in .cpp file headers

Summary:
A *.cpp file header in LLDB (and in LLDB) should like this:
```
//===-- TestUtilities.cpp -------------------------------------------------===//
```
However in LLDB most of our source files have arbitrary changes to this format and
these changes are spreading through LLDB as folks usually just use the existing
source files as templates for their new files (most notably the unnecessary
editor language indicator `-*- C++ -*-` is spreading and in every review
someone is pointing out that this is wrong, resulting in people pointing out that this
is done in the same way in other files).

This patch removes most of these inconsistencies including the editor language indicators,
all the different missing/additional '-' characters, files that center the file name, missing
trailing `===//` (mostly caused by clang-format breaking the line).

Reviewers: aprantl, espindola, jfb, shafik, JDevlieghere

Reviewed By: JDevlieghere

Subscribers: dexonsmith, wuzish, emaste, sdardis, nemanjai, kbarton, MaskRay, atanasyan, arphaman, jfb, abidh, jsji, JDevlieghere, usaxena95, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D73258

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[lldb/Debugger] Rename IO handler methods to be more meaningful (NFC)

Make it clear form the method names whether they are synchronous or
asynchronous.

[lldb/Lua] Support loading Lua modules

Implements the command script import command for Lua.

Differential revision: https://reviews.llvm.org/D71825

[lldb/Lua] Make lldb.debugger et al available to Lua

The Python script interpreter makes the current debugger, target,
process, thread and frame available to interactive scripting sessions
through c

[lldb/Lua] Make lldb.debugger et al available to Lua

The Python script interpreter makes the current debugger, target,
process, thread and frame available to interactive scripting sessions
through convenience variables. This patch does the same for Lua.

Differential revision: https://reviews.llvm.org/D71801

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[Lldb/Lua] Persist Lua state across script interpreter calls.

Don't create a new lua state on every operation. Share a single state
across the lifetime of the script interpreter. Add simple locking

[Lldb/Lua] Persist Lua state across script interpreter calls.

Don't create a new lua state on every operation. Share a single state
across the lifetime of the script interpreter. Add simple locking to
prevent two threads from modifying the state concurrently.

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[lldb/Lua] Implement a Simple Lua Script Interpreter Prototype

This implements a very elementary Lua script interpreter. It supports
running a single command as well as running interactively. It use

[lldb/Lua] Implement a Simple Lua Script Interpreter Prototype

This implements a very elementary Lua script interpreter. It supports
running a single command as well as running interactively. It uses
editline if available. It's still missing a bunch of stuff though. Some
things that I intentionally ingored for now are that I/O isn't properly
hooked up (so every print goes to stdout) and the non-editline support
which is not handling a bunch of corner cases. The latter is a matter of
reusing existing code in the Python interpreter.

Discussion on the mailing list:
http://lists.llvm.org/pipermail/lldb-dev/2019-December/015812.html

Differential revision: https://reviews.llvm.org/D71234

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[lldb/Lua] Add Boilerplate for a Lua Script Interpreter

This adds the boilerplate necessary to support the Lua script
interpreter. The interpreter is not functional yet and just reports that
it's no

[lldb/Lua] Add Boilerplate for a Lua Script Interpreter

This adds the boilerplate necessary to support the Lua script
interpreter. The interpreter is not functional yet and just reports that
it's not implemented.

Discussion on the mailing list:
http://lists.llvm.org/pipermail/lldb-dev/2019-December/015812.html

Differential revision: https://reviews.llvm.org/D71232

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