registryd: unlock capslock during keysym synthesis
registryd: unlock capslock during keysym synthesis

otherwise the synthesized keysyms would be affected by the capslock
state, thus producing unexpected capitalized result when an AT tries to
synthesize text.

Fixes #50

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