Ignore the build result of ATL Project.

This commit Makes VisualStudio.gitignore ignore the three items below. It needs when you create an ATL Project.

* [Dd]ebugPS/
* [Rr]eleasePS/
* dlldata.c
Merge pull request #923 from simnalamburt/patch-1

Updated rules of 'VisualStudio.gitignore' about ATL Project.
Removed JetBrains *.iws files

This entry should be (and is) rather in Global/JetBrains.gitignore
Removed IDE support files entirely

Those files should be in Global/ templates
Merge pull request #954 from krtek/patch-1

Removed IDE-specific rules from Grails template