added tg_strerror for dev errorlist

src/catdbcacheu.cpp

@@ -108,6 +108,21 @@ string CaTDBCacheU::format_to_str(Tango::AttrDataFormat f) const {
     }
 }
 
+std::string CaTDBCacheU::tg_strerror(const Tango::DevErrorList &errors)
+{
+    std::string msg;
+    for(int i = errors.length() - 1; i >= 0; i--)
+    {
+        msg += errors[i].origin;
+        msg += "\n";
+        msg += errors[i].desc;
+        msg += "\n";
+        msg += errors[i].reason;
+        msg += "\n\n";
+    }
+    return msg;
+}
+
 std::string CaTDBCacheU::tg_strerror(const Tango::DevFailed &e) const
 {
     std::string msg;

src/catdbcacheu.h

@@ -18,6 +18,7 @@ public:
     // copied from CuTangoWorld (to avoid including cumbia-tango as dependency)
     void m_fill_from_attconf(const Tango::AttributeInfoEx *ai, CuData &dat);
     std::string tg_strerror(const Tango::DevFailed &e) const;
+    std::string tg_strerror(const Tango::DevErrorList &errors);
     string format_to_str(Tango::AttrDataFormat f) const;
     // -----------------------------------------------------------------------------+