Exiv2

Some newer files didn't have SVN properties set such as svn:eol-style and svn:keywords, the attached patch fixes this. I've also straightened some other properties:

• Most .hpp/.h files had only Rev set while some had Rev and Id, now all .hpp files only have Rev (none need Id).
• Most .vcproj had svn:eol-style set to native, now they all do (and I removed svn:keywords on the few that had them).
• Some properties were set to "'Id Rev'" (note the single quotes) or "Rev Id", these were changed to "Id Rev".

Note that some files not only had their properties changed, but also their content. In some cases this is because a file didn't have keywords set yet, but did use them (perhaps before in a different branch). But in other cases the entire file is changed and this appears to be a side-effect of setting svn:eol-style to native (probably those that used a different line-ending than whatever my editor uses). I surely didn't do anything but change properties (diffing while ignoring end-of-line/whitespace changes should show this).