Modified .\7-Zip\18.05\CPP\7zip\UI\Console\Main.cpp to build as a dll.  Changes are delimited in the file with "//Start" and "//End" comment brackets.

Additonal files added to support building as a dll. This includes .\7-Zip\eai7zip.vcxproj file to build with:

	Microsoft Visual Studio Professional 2015
	Version 14.0.23107.0 D14REL
	Microsoft .NET Framework
	Version 4.7.02556

Release_x64 and Debug_x64 builds are include in .\7-Zip\bin_x64. 