Add netfx 4.5.2 support to NetFxExtension
WIXFEAT: 4190 - Self updating bundles.

- core cleanup after code review
- added history entry
Add ApprovedExeForElevation element, IBootstrapperEngine::LaunchApprovedExe, IBootstrapperApplication::OnLaunchApprovedExeBegin, IBootstrapperApplication::OnLaunchApprovedExeCompleted, and enable WixStdBA to use them.
Post-merge fix-ups of low-pri feedback requests
Unify BuilderBase across test projects

There were basically duplicate definitions of builder classes in both WixToolTests and WixTests. This change consolidates them.
Format the arguments sent to LaunchApprovedExe, and address feedback.
Merge pull request #82 from wixbuild/develop

WixBuild: Version 3.9.616.0
Merge pull request #80 from heaths/postmerge

Post-merge fix-ups of low-pri feedback requests
Merge branch 'NetFxExtension-4.5.2-support' of git://github.com/gordonmcshane/wix3 into develop
Merge pull request #33 from gordonmcshane/NetFxExtension-4.5.2-support

Add netfx 4.5.2 support to NetFxExtension
Merge branch 'develop' of https://github.com/wixtoolset/wix3 into develop
Merge branch 'testfixes' of git://github.com/heaths/wix3 into develop
Merge pull request #81 from heaths/testfixes

Unify BuilderBase across test projects
Improve multicore build

Only run GenerateWixInclude.exe once.
Fixed compile issue specific to my machine, removed unreferenced variable.
WIXFEAT: 4190 - Self updating bundles.

- core cleanup after code review
- added history entry

Conflicts:
	History.md
Merge pull request #85 from jchoover/BurnUnitTestFix

Fixed compile issue specific to my machine, removed unreferenced variabl...
Fix formatting bug with long strings

There was an issue where long strings could not be formatted back into themselves when calling the secure functions to zero memory. This will still zero the original memory block of the reallocated block is at a new address.
Merge branch 'develop' of https://github.com/wixtoolset/wix3 into develop
Merge branch 'relbundles' of git://github.com/heaths/wix3 into develop