Build and link registration applications

[dbs4261]

Ive encountered an issue with the ossim-correl and ossim-rejout. Neither one is able to find their required object in the registration plugin. I have use -DBUILD_REG_PLUGIN=ON to enable the registration plugin, but that doesnt seem to have fixed it. I looked into the reg plugin directory and it seems to only be a skeleton even on the master branch. Ive also tried enabling the ATP plugin, GDAL plugin, and OpenCV plugin. AtpAnnotatedImage.h and AtpGenerator.h reference a header <ossim/reg/Image.h> which does not exist. What am I missing here? How do get the ossim-correl and ossim-rejout applications working?