Changes

Summary

1. add #vectorOffset and test. fixes #4639 (details)

Commit 194df5da415bb87be4eac206d4d047e28dbdb953 by marcus.denker add #vectorOffset and test. fixes #4639
	src/OpalCompiler-Core/OCVectorTempVariable.class.st (diff)
	src/OpalCompiler-Tests/ASTtoIRMappingTests.class.st