When searching for a symbol by name, only look at
symbols that are defined within the object,
ignoring extern symbols (symbols without section).
Fixes#180Fixes#181
* Reimplement colorized data relocation hover diffs
* Fix objdiff-wasm build
Data diffing doesn't seem to be fully implemented in objdiff-wasm yet, so just putting placeholders in so it compiles.
* Reloc hover: Add separators, override special color too
* Show data literal values on instruction hover
Reimplements #108
* Show reloc diffs in func view when data's content differs
Reimplements #153
* Data diff view: Show relocs on hover and in context menu
This reimplements #154
Note that colorizing the text depending on the kind of diff has still not been reimplemented yet
* Fix up some comments