Log Message:
Update to 4.3.44.

Overview of changes in gcalctool 4.3.44
* Fixed bug 133764.
  - "Gradients" was still appearing when in Scientific mode (instead of
    "Gradians".
  - In the x^2 button, the 2 should not be italicized.
  - In the x^2 and x^y buttons, the x should be italicized.
  - The View Thousands Separator menu item should not remain active during
    an error condition.

Overview of changes in gcalctool 4.3.43
* Fixed bug 133590. The About box now lists the documenters of gcalctool.

Overview of changes in gcalctool 4.3.42
* Fixed bug 132582. Adjusted the gcalctool titlebar to use a hyphen
  (rather than square brackets) to show what mode the user is currently
  using.

Overview of changes in gcalctool 4.3.41
* Fixed bug 132570. Adjusted UI to use spacing to delineate groups rather
  than frames (per the HIG).

Overview of changes in gcalctool 4.3.40
* Fixed bug 131571. User defined constants are now read/written out (as
  gconf resources) with no thousands separator and with a radix of ".".

Overview of changes in gcalctool 4.3.39
* Fixed bug 131594. The "Insert ASCII View..." menu item and the
  "Insert" button no longer use the GTK_STOCK_CONVERT stock icon
  (as per the HIG).