win,msi: link node.exe to iojs.exe
win,msi: link node.exe to iojs.exe

Add a feature to the MSI installer that, when selected, hard-links
node.exe to iojs.exe.

PR: https://github.com/iojs/io.js/pull/346
Reviewed-by: Fedor Indutny <2e687df1861dff46b1954016c7b2cad32e8742d4@gmail.com>
Reviewed-by: Rod Vagg <f9f03903429036ef609ed7ca822fddfa76155c29@vagg.com>

dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node