[Lazarus] mbRetry of MessageDlg

[patspiper]

Using mbRetry button in MessageDlg displays a button with a Refresh 
caption instead of Retry. I tracked this down to the usage of 
'gtk-refresh' in gtk2lclintf. The GTK+ documentation doesn't mention a 
retry stock item. Changing 'gtk-refresh' to 'Retry' did the job, but I 
have no idea what impact it would have on other themes.

How should this issue be solved?