SolarShading and HeatBalanceIntRadExchange performance tuning
Revert unintended FD tuning chg
SolarShaing: Revert Int64 to Real64 array chg (precision concerns)
CheckConvexity GCC 4.9 code gen bug work-around / Minor updates
Merge branch 'develop' into Objexx_Tuning
Merge pull request #4618 from NREL/Objexx_Tuning

SolarShading and HeatBalanceIntRadExchange performance tuning
A sampling of annual tests revealed no diffs.  I'm going to merge this.
Merge branch 'develop' into 74715116-CrashIssue4277