Implementation of TP_EPC_6002_01

Add Refer-Sub header

No commit message

Add templates

Update TectCast patch sources for t3devkit support

* str2oct -> char2oct, as str2oct
* match(value, template) -> cannot match(template, template)
* value list assignment for record, requires number of values match the number of fields

Note that the function to decode MsrpUri shall be developed later

Final location SHALL be svn+ssh://vcs.etsi.org/TTCN3/LIB/LibMsrp/