[Thermo] Deprecate classes PseudoBinaryVPSSTP and electrodeElectron

include/cantera/thermo/PseudoBinaryVPSSTP.h

@@ -61,6 +61,8 @@ namespace Cantera
  *  The way that it collects the cation and anion based mole numbers
  *  is via holding two extra ThermoPhase objects. These
  *  can include standard states for salts.
+ *
+ *  @deprecated Incomplete and untested. To be removed after Cantera 2.2.
  */
 class PseudoBinaryVPSSTP : public GibbsExcessVPSSTP
 {

include/cantera/thermo/StoichSubstanceSSTP.h

@@ -481,6 +481,9 @@ public:
 /*!
  *  The class is based on the electron have a chemical potential
  *  equal to one-half of the entropy of the H2 gas at 1 bar.
+ *
+ *  @deprecated Deprecated in favor of class MetalSHEelectrons. To be removed
+ *      after Cantera 2.2.
  */
 class electrodeElectron : public StoichSubstanceSSTP
 {

src/thermo/PseudoBinaryVPSSTP.cpp

@@ -36,6 +36,8 @@ PseudoBinaryVPSSTP::PseudoBinaryVPSSTP() :
     cationPhase_(0),
     anionPhase_(0)
 {
+    warn_deprecated("Class PseudoBinaryVPSSTP",
+                    "To be removed after Cantera 2.2.");
 }
 
 PseudoBinaryVPSSTP::PseudoBinaryVPSSTP(const PseudoBinaryVPSSTP& b) :

src/thermo/StoichSubstanceSSTP.cpp

@@ -262,6 +262,8 @@ void StoichSubstanceSSTP::setParametersFromXML(const XML_Node& eosdata)
 electrodeElectron::electrodeElectron():
     StoichSubstanceSSTP()
 {
+    warn_deprecated("Class electrodeElectron",
+                    "To be removed after Cantera 2.2.");
 }
 
 electrodeElectron::electrodeElectron(const std::string& infile, std::string id_) :