* origin/topic/vern/bvu-remove:
Use static_cast instead of dynamic_cast for Val conversions
Remove GET_FIELD_AS macro, replace with template methods
Add templated As() method to Val, use in various places we were using dynamic_cast
Move ValImpl classes into detail namespace
Some review cleanup in Val.cc
Changes addressing pending issues per PR discussion
Remove BroValUnion by hoisting underlying Val subclass values into subclasses
* origin/topic/vern/lambda-copy-semantics:
Add NEWS entries for lambda/capture-list functionality
Tweak vector append/move logic of Frame::SerializeCopyFrame()
Switch FuncType capture-list storage to optional<vector<Capture>>
Fix memory leaks in lambda capture/frame management
tests added for new capture-by-reference closure semantics & errors
documentation updates
test suite updates and additions for new capture semantics & suppression of error cascades
support for transmitting of capture-semantics closures via Broker, while keeping deprecated functionality
minor simplifications in using type names, and unordered sets rather than vectors
changes to Frames to support access to captured-by-copy-semantics variables
changes to ScriptFunc's to track captures, and LambdaExpr's to check/manage them
parsing of new []-style captures, and creation of associated data structures
nit: fixed some 0/1 values that should instead be false/true
no semantic changes: factored some of the complexity of begin_func() into a pair of static functions for clarity
simple error propagation fix: don't complain about "unused" values that themselves are due to errors
no semantic changes: corrected & reflowed some comments, plus a whitespace tweak
* origin/topic/vern/script-inlining:
cleaner approach for localizing errors associated with duplicated ASTs: virtualize GetLocationInfo
Add commentary to Frame::GetElement(int) about lack of offset adjustment
Remove unused local in Inliner::Analyzer()
Tweak FuncInfo memory management
Switch InlineExpr from using IDPList* to vector<IDPtr>
Insert contents of #included script-opt files directly
Simplify some IntrusivePtr operations in Expr::Duplicate/Inline
Remove Func::AsScriptFunc() methods
Remove superflous std::move's from Inliner return values
Remove SetupResult::parse_only field
Rename Frame::IncreaseOffset() to Frame::AdjustOffset()
Update alternative plugins.hooks baselines
Superficial changes to script-opt related code
merge glitch
updates from test suite
inlining of Zeek script functions
inlining of Zeek script functions
