only define this stuff when building libgphoto2 itself, it will break external users in C++ or WIn32.
only define this stuff when building libgphoto2 itself,
it will break external users in C++ or WIn32.


git-svn-id: 40dd595c6684d839db675001a64203a1457e7319@11219 67ed7778-7388-44ab-90cf-0a291f65f57c

msmeissn/libgphoto2,thusoy/libgphoto2,jbreeden/libgphoto2,msmeissn/libgphoto2,thusoy/libgphoto2,jbreeden/libgphoto2,jbreeden/libgphoto2,thusoy/libgphoto2,thusoy/libgphoto2,gphoto/libgphoto2,gphoto/libgphoto2,msmeissn/libgphoto2,gphoto/libgphoto2,msmeissn/libgphoto2,jbreeden/libgphoto2,gphoto/libgphoto2,jbreeden/libgphoto2,gphoto/libgphoto2,msmeissn/libgphoto2,gphoto/libgphoto2,thusoy/libgphoto2