A puzzle game similar to "Bejeweled" or "Diamond Mine"

Gweled is a GTK+ version of a popular PalmOS/Windows/Java game called
"Bejeweled", originally written by Sebastien Delestaing. The aim of the game is
to make alignment of 3 or more gems, both vertically or horizontally by swapping
adjacent gems. The game ends when there are no possible moves left.