colorize errors and warnings

Use ERL_ERROR and ERL_WARNING

git grep -li 'errlogPrintf.*[" ]error' | xargs sed -i -E -e 's|(errlogPrintf.*[" ])(error)|\1" ERL_ERROR "|g'

git grep -li 'errlogPrintf.*[" ]warn' | xargs sed -i -E -e 's|(errlogPrintf.*[" ])(warn[a-zA-Z]*)|\1" ERL_WARNING "|g'

modules/ca/src/client/casw.cpp

@@ -188,7 +188,7 @@ int main ( int argc, char ** argv )
             epicsSocketConvertErrnoToString (
                 sockErrBuf, sizeof ( sockErrBuf ) );
             epicsSocketDestroy ( sock );
-            errlogPrintf ("casw: error from recv was = \"%s\"\n",
+            errlogPrintf ("casw: " ERL_ERROR " from recv was = \"%s\"\n",
                 sockErrBuf );
             return -1;
         }