Changes

Summary

1. work around frontends that do not initialise the web search providers (details)
2. Initialise web search engines on riscos (details)

Commit d62fca3af67418c7f7708461abfb0b18943728c9 by Vincent Sanders work around frontends that do not initialise the web search providers
	desktop/searchweb.c (diff)
Commit 4609648b9e0f812d5b765a6dbaf92576e06475ec by Vincent Sanders Initialise web search engines on riscos
	frontends/riscos/appdir/Resources/SearchEngines (diff)
	frontends/riscos/gui.c (diff)