Guanako: Synchronize parser and scanner from upstream.

 * Unfortunately versions are incompatible between 0.26 (and before)
   maintaining both versions until 0.24 support drops.
Valama file structure: Add missing tooltips.

 * Add tooltips and set search entry text to symbol name (so a "all-files"
   button doesn't clear the search).
 * Disable some debug messages.