update COPYRIGHT notices and start fixing oratypes.h for windows
add .cvsignore file for build time files
fix #DEFINE ORADEFS in oradefs.h
rename oraconst.h to oradefs.h
Remove the RTLD_NODELETE flag from dlopen()
update oratypes.h
Use SHLIB_SUFFIX instead of hard coded value for shared lib suffix.
use DLOPEN for unix code
added some x-platform dlsym magic macros
add test for HAVE_DLFCN_H
