Update gnome-calculator to 3.22.2

Overview of changes in gnome-calculator 3.22.2
    * Fixed conversion unit switch (Robert Roth)
    * Fixed first expression with parentheses (Robert Roth)
    * Fixed possible errors on currency conversion (Robert Roth)
    * Ctrl+Backspace should only delete last number (Robert Roth)
    * Fixed reusing results from the history stack (Antonio Ospite)

Overview of changes in gnome-calculator 3.22.1
    * Headerbar layout fixes (djb)
    * Use dim labels for bit markers in Programming mode (djb)
    * Fixed history scrolling (Robert Roth)
    * Minor programming errors fixed (Tobias Mueller)
    * Vertically center headerbar button content (Lapo Calamandrei)
    * Updated styles for gtk+ 3.20 (Exalm)
    * [l10n] update Croatian translations (gogo)

Overview of changes in gnome-calculator 3.22.0
    * Fix base change for log, fixes #748729 (Robert Roth)
    * Math buttons: fix a (potential) crash loading financial dialogs (Tobias Mueller)
    * Updated Dutch translation master (Nathan Follens)
    * [l10n] update Persian translations (Arash Mousavi)

Overview of changes in gnome-calculator 3.21.92
    * Updated Thai translation (Akom Chotiphantawanon)
    * Updated Polish translation (Piotr Dr��g)
    * Update British English translation (David King)
    * Disable pt translation of the manual (Emmanuele Bassi)
    * Updated Portuguese translation (Tiago Santos)
    * fix the build (Matthias Clasen)
    * Added Portuguese translation (Tiago Santos)
    * Updated Polish translation (Piotr Dr��g)

(prlw1)