added profiling option to allow profiling/debug. Jira ticket BLD-300
added profiling option to allow profiling/debug. Jira ticket BLD-300

BohuTANG/ft-index,kuszmaul/PerconaFT-tmp,percona/PerconaFT,kuszmaul/PerconaFT,kuszmaul/PerconaFT-tmp,kuszmaul/PerconaFT-tmp,ottok/PerconaFT,kuszmaul/PerconaFT-tmp,percona/PerconaFT,ottok/PerconaFT,kuszmaul/PerconaFT,ottok/PerconaFT,BohuTANG/ft-index,percona/PerconaFT,kuszmaul/PerconaFT,percona/PerconaFT,BohuTANG/ft-index,kuszmaul/PerconaFT,BohuTANG/ft-index,ottok/PerconaFT