NamedPipeStream is now bidirectional, so that readers and writer threads
from the same process do not interfere with each other.  ION_Processing
and CN_Processing can now communicate (again) when running on the same
system.

Fixed short reads for non-UDP input.

A separate column is needed for flux and shapelet

- parse date and time from log lines
- simplified parsing of log lines
- removed hidden dependencies between member functions
- updated and simplified some patterns

Added SourceInfo.cc

Added support for rotation measures and shapelets

Added shapelet fields

Specified that PowerPC inline assembly clobbers condition code register.

autoWeight used incorrect data when used after MedFlagger because it
used itsBuffer instead of the buffer to average.