On very small programs, the Eva analysis may end before the computation hook
is registered, and ivette is never notified that the analysis has been computed.

Sending the corresponding signal when the hook is registered ensures the
synchronization of the given value/state/array at the start.

Fixes a bug of the SourceCode component where the view is empty on markers
with unknown position, for instance on type markers.
Now, when selecting a type marker, the view displays the top of the current
function, which is not perfect, but better.

Also uses Kernel_function.is_in_libc.

The change of a property status can also impact the status of other properties
which are logical consequences of the first one (and so on: these logical
consequences can be hypotheses of yet other properties).
In the server, when a property is modified, as we can't known which other
properties are impacted, the whole synchronized array is reloaded.

Loïc Correnson authored 2 years ago and David Bühler committed 2 years ago

Also fixes various sync. bugs

This cache required parsing C expressions and lvalues as terms, which would
sometimes fail and prevent the creation of otherwise fine markers.

Also, this cache was only used for terms manually provided by the user,
which should not happen too frequently.