vbscript: Round half to even in to_int.

[Jacek Caban]

Spotted by Zhan Jianyu.
---
 dlls/vbscript/global.c      | 12 ++++++++++--
 dlls/vbscript/tests/api.vbs |  9 +++++++++
 2 files changed, 19 insertions(+), 2 deletions(-)


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