#65 "theVersion" hardcoded

[Jim Trainor]

In ImplAAFFile.cpp, a variable named "theVersion" is
harcoded to "{1, 0}".

This is used to initialize the Header object's Version
property via a call to ImplAAFHeader::SetFileRevision().

"theVersion" should not be hardcoded. It should be
assigned a value that is computed using the version
numbers maintained in AAFSDKBuild.h.