Add-Ins for projects

[TimoVJL]

OpenPrjTo64b
Copy project file to new project file and change output dir to output64 and some options for x64.

PrjCopyPrjFile
Copy project file to new one and open it.

PrjModV9ToVer7
Strips version 9 project file to version 7

PrjOptions
Show project options

Useful when testing small project.

EDIT 2019-02-13: fix for PrjModV9ToVer7, UNICODE project file handling.

[TimoVJL]

PrjToSubDir

This Add-In copy selected project-file to it's subdirectory PellesC and opens it.
Don't work with PellesC 8, it was made for easier testing of PellesC 9 in it's private directory.

PrjModeNew64  add a new mode using users ini-file (PrjModeNew64.ini), an example add a Release msvc.