cleared before entering the viewer main loop, this removes memorymanager
a reported memory leak due to the viewer using exit() which bypasses
the clean up on main itself.
Added an osgNew to the ReaderWriterRGB.cpp to aid detected of tracking of
memory leaks.
Added a cleaner way to install demo source so that installed versions use a
simplified makedefs/makerules.
Small fix to get osgText to compile with Solaris CC. Constructor declared
with a non-const argument, but implemented with const argument.
the Make directory is left with four files only :
makedefs
makerules
makedirrules
instrules
These work for all platforms supported so far, which include :
Linux
Irix
Solaris
MacOSX
Cygwin
FreeBSD
