Fix ucs2keysym line for Euro sign
Fix ucs2keysym line for Euro sign

AFAICT, 0x13a4 has never been the keysym for the Euro sign.
Even since X11R6.6 we had #define XK_EuroSign 0x20ac.

This fixes synthesizing it.

GNOME/at-spi2-core,GNOME/at-spi2-core,GNOME/at-spi2-core