Manual.md: state desire for useful nocross, broken
Manual.md: state desire for useful nocross, broken

Maybe this way we can have less `nocross=yes` and more
`nocross=http://this.link/to/a/failed/cross/build` to make it easier to
debug later.

necrophcodr/void-packages,NeoChontrix/void-packages,NeoChontrix/void-packages,kulinacs/void-packages,kulinacs/void-packages,necrophcodr/void-packages,coredumb/void-packages,gangsterakato/void-packages,WKuipers/void-packages,juliendehos/void-packages,ayghor/void-packages,gangsterakato/void-packages,NeoChontrix/void-packages,WKuipers/void-packages,liwakura/void-packages,NeoChontrix/void-packages,juliendehos/void-packages,NeoChontrix/void-packages,necrophcodr/void-packages,necrophcodr/void-packages,ayghor/void-packages,floGik/void-packages,gangsterakato/void-packages,EaterOfCode/void-packages,jprjr/void-packages,EaterOfCode/void-packages,kulinacs/void-packages,jprjr/void-packages,floGik/void-packages,necrophcodr/void-packages,kulinacs/void-packages,jprjr/void-packages,opsaaspo/void-packages,juliendehos/void-packages,floGik/void-packages,liwakura/void-packages,WKuipers/void-packages,opsaaspo/void-packages,EaterOfCode/void-packages,WKuipers/void-packages,floGik/void-packages,gangsterakato/void-packages,opsaaspo/void-packages,opsaaspo/void-packages,ayghor/void-packages,kulinacs/void-packages,juliendehos/void-packages,juliendehos/void-packages,liwakura/void-packages,coredumb/void-packages,juliendehos/void-packages,floGik/void-packages,floGik/void-packages,kulinacs/void-packages,jprjr/void-packages,Bubble-be/void-packages,jprjr/void-packages,NeoChontrix/void-packages,liwakura/void-packages,coredumb/void-packages,ayghor/void-packages,ayghor/void-packages,gangsterakato/void-packages,coredumb/void-packages,opsaaspo/void-packages,Bubble-be/void-packages,opsaaspo/void-packages,Bubble-be/void-packages,ayghor/void-packages,coredumb/void-packages,liwakura/void-packages,Bubble-be/void-packages,jprjr/void-packages,WKuipers/void-packages,WKuipers/void-packages,liwakura/void-packages,EaterOfCode/void-packages,gangsterakato/void-packages,Bubble-be/void-packages,Bubble-be/void-packages,EaterOfCode/void-packages,coredumb/void-packages