Add '-pg' flag during linking when 'gprof' profiling is enabled. (Bug: Threads hang if the code is not built with internal tracing enabled. Need to fix.)
Add '-pg' flag during linking when 'gprof' profiling is enabled.
(Bug: Threads hang if the code is not built with internal tracing enabled. Need to fix.)

jas14/khmer,F1000Research/khmer,souravsingh/khmer,F1000Research/khmer,jas14/khmer,souravsingh/khmer,F1000Research/khmer,souravsingh/khmer,Winterflower/khmer,jas14/khmer,kdmurray91/khmer,ged-lab/khmer,ged-lab/khmer,Winterflower/khmer,kdmurray91/khmer,kdmurray91/khmer,Winterflower/khmer,ged-lab/khmer