From Fons:

- make ctor TString::TString(Ssiz_t ic) explicit to avoid automatic
  conversion of integer to a TString of size of the integer value.
  This addresses issue 50883.

- make TString::Hash() machine independent, by returning an UInt_t
  and not a machine dependent ULong_t. The algorithm was anyway only
  using 32-bits for the hash and on 64-bit machines the remaining
  32-bits were not explicitly set, making the hash process dependent.
  This addresses issue 37881.


git-svn-id: http://root.cern.ch/svn/root/trunk@29145 27541ba8-7e3a-0410-8455-c3a389f83636