Improved string handling for the CA SDF build. Also added support for reading...

Improved string handling for the CA SDF build.  Also added support for reading an ini file as a channel source list from INI_FILE epics environment variable.


git-svn-id: https://redoubt.ligo-wa.caltech.edu/svn/advLigoRTS/trunk@4061 6dcd42c9-f523-4c6d-aada-af552506706e