Fix #830: Compiler hangs on implicit search with singleton &/|#843

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odersky merged 2 commits intoscala:masterfrom

dotty-staging:fix-#830

Oct 25, 2015

Commits on Oct 22, 2015

Fix #830: Compiler hangs on implicit search with singleton &/|
odersky
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Commits on Oct 23, 2015

Only replace intersections of constants with Nothing
odersky
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