- allow scriptcontext objects to be dynamic

- enhancements in scriptcontext (error messages stored as properties)

ascon.h

@@ -2,7 +2,6 @@
 #define ASCON_H
 
 #include "sics.h"
-#include "errormsg.h"
 
 /** \file
  * \brief Asynchronous connection handling for devices controlled over tcp-ip
@@ -60,15 +59,17 @@ int AsconWrite(Ascon * a, char *command, int noResponse);
  *  \return the response when a response is ready
  *      NULL when the command has not completed and the response is not yet finished
  *      "" when the command has completed, but no response was expected.
- *      The result is only valid until the next call to other AsconXxx functions
- *      and has to be duplicated if needed later.
+ *      The result is only valid until the next call to any AsconXxx function
+ *      with the same connection and has to be duplicated if needed later.
  */
 char *AsconRead(Ascon * a);
 
-/** \brief get the connections error list
- *  \return the error list
+/** \brief get the last error message
+ *  \return the error message
+ *      The result is only valid until the next call to any AsconXxx function
+ *      with the same connection and has to be duplicated if needed later.
  */
-ErrMsg *AsconGetErrList(Ascon * a);
+char *AsconGetError(Ascon *a);
 
 /** \brief a helper function
  *  \param argc the number of args
@@ -78,7 +79,7 @@ ErrMsg *AsconGetErrList(Ascon * a);
  */
 char *ConcatArgs(int argc, char *argv[]);
 
-/** \brief function for dealing with times with musec resolution
+/** \brief function for dealing with times with microsec resolution
  *  \return absolute time as double value
  */
 double DoubleTime(void);