Add s.index and s.rindex transformations
Proper reporting for invalid module parameter types
allow route_to_gw() to receive a list of gw IDs (instead of only one) - the list is a comma separated list of gw IDs
docs updated for route_to_gw()
Job timeout for the 'exec' module

* the "time_to_kill" parameter now works for all "exec_*" commands
* improved overall documentation and usage examples
mod_fix: new helper fixup function that returns string and/or int value from a gparam_t
registrar: Fix harmless compiler warning
dialplan: move the "attrs" pvar into the "dp_translate" param list

* simplifies the scripting logic
* more efficient - it is now a local option, as opposed to a global one
dispatcher: add ability to handle string PVs for ds_select_dst/domain
Fix issue introduced in commit "23174d2629c"
tm: change the "fr_(inv_)?timer_avp" params into module vars

* namely $T_fr_timer and $T_fr_inv_timer
* simplifies the scripting logic (also prevents some errors)
* less CPU cycles, less mem usage
* documentation updated
dispatcher: reorganize the code by using a define
mod_fix: fixup_get_isvalue - return the int value if possible
dispatcher: simplify ds_select_dst/domain params handling
mod_fix: have commit 4e3b6b7c390a work on strings and pv_elem_t as well
dispatcher: enhance error probe
 - print dispatching id for unknown dispatching algorithm
mod_fix:fixup_get_isvalue - make sure that we have a valid string for int converision
dispatcher: change signature for ds_select_dst
 - group all controlling params in a single structure
dispatcher: use a single helper function for all ds_select_dst/domain functions
Fix crash when printing $(ct[*])