gitk: Set the font for all spinbox widgets
gitk: Set the font for all spinbox widgets

Use the X resources to set the font, removing the need to set the font
for specific widgets.

Signed-off-by: Mark Hills <f1b5a91d4d6ad523f2610114591c007e75d15084@pogo.org.uk>
Signed-off-by: Paul Mackerras <19a0ba370c443ba08d20b5061586430ab449ee8c@samba.org>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git