Only generate vpr/vprParam.h if it did not already exist.  This means that the compiled-in version information will not be as accurate as it used to be, but the library won't be linked over and over.  The version info will be accurate when doing release builds, and that's where it really counts.
Only generate vpr/vprParam.h if it did not already exist.  This means
that the compiled-in version information will not be as accurate as it
used to be, but the library won't be linked over and over.  The version
info will be accurate when doing release builds, and that's where it
really counts.


git-svn-id: 769d22dfa2d22aad706b9a451492fb87c0735f19@9055 08b38cba-cd3b-11de-854e-f91c5b6e4272

MichaelMcDonnell/vrjuggler,MichaelMcDonnell/vrjuggler,godbyk/vrjuggler-upstream-old,vrjuggler/vrjuggler,vancegroup-mirrors/vrjuggler,vancegroup-mirrors/vrjuggler,MichaelMcDonnell/vrjuggler,vancegroup-mirrors/vrjuggler,LiuKeHua/vrjuggler,LiuKeHua/vrjuggler,LiuKeHua/vrjuggler,MichaelMcDonnell/vrjuggler,godbyk/vrjuggler-upstream-old,vrjuggler/vrjuggler,vrjuggler/vrjuggler,vancegroup-mirrors/vrjuggler,LiuKeHua/vrjuggler,vrjuggler/vrjuggler,godbyk/vrjuggler-upstream-old,godbyk/vrjuggler-upstream-old,vrjuggler/vrjuggler,godbyk/vrjuggler-upstream-old,MichaelMcDonnell/vrjuggler,LiuKeHua/vrjuggler,godbyk/vrjuggler-upstream-old,LiuKeHua/vrjuggler,LiuKeHua/vrjuggler,vancegroup-mirrors/vrjuggler,MichaelMcDonnell/vrjuggler,vancegroup-mirrors/vrjuggler,MichaelMcDonnell/vrjuggler,vrjuggler/vrjuggler,MichaelMcDonnell/vrjuggler,vrjuggler/vrjuggler,LiuKeHua/vrjuggler,vrjuggler/vrjuggler