ConfigParser: Print warnings just once
updated INSTALLGUIDE. configure flag changed from --with-paths to --with-pkg-paths
Relax filtering of disparities
Cache: Print warnings just 1000 times rather than forever
Cache: refine previous fix
Cache: Make var volatile, otherwise Mac complains
CorrelationView: Rm unused variable
correlation: Clarify that time is in seconds
grassfire: Clarify what is being written
grassfirealpha: Clarification about output