Change remaining old 'offset' deprecation to error
fix Issue 12776 - Wrong type for __vector(int[4]).init
fix Issue 12163 - pdb debugging (win64): stepping loops points to incorrect lines
Merge pull request #4217 from 9rnsr/fix12776

Issue 12776 - Wrong type for __vector(int[4]).init
Merge pull request #4219 from WalterBright/fix12163

fix Issue 12163 - pdb debugging (win64): stepping loops points to incorr...