b/f: sst: use proper delimiter for supported list

support for SST in the remote would not be understood properly in some cases

thanks to Jon Bonilla for reporting
b/f: when resending request from SST to 422, send VERBATIM
xmlrpc2di: configurable log level for XMLRPC calls / parameters
patch provided by A. Pogrebennyk - no build errors when using CI system

was:  082f06f5 ... and not installing default config files

Note: proper targets should be used (e.g. install-bin) if only
      binaries should be installed, or alternatively the pkg script should
      remove installed cfg files afterwards. install target
      installs the complete package
core: added AmUriParser functions to bring inline with 1.6

relevant commits:
28dd1a8 added method to print canonical URI
e2cb88c c/f: return value of skip_name() is signed, size_t is not.
01c4e1c sbc: first REGISTER cache draft
c39cd27 generic request forwarding (WIP 2)
786a59a added add_param_to_param_list(), add_user_param() and print() methods
e9f988c b/f: parsing issue in AmUriParser when dealing with parameters in the username part (bug # 81)
01b2796 sbc: added support for R-URI host modification
20d7bef b/f: fix display name replacements, $fn/$tn etc

plus tests
core: AmUriParser: fix headers in nameaddr_str, added parse_nameaddr function alias
utils: added URL_encode and URL_decode functions
sbc: fix call transfers with Replaces through SBC

Replaces header is fixed in either Replaces of INVITE or of REFER
messages. New sbc profile options:
fix_replaces_inv=[yes|no]
fix_replaces_ref=[yes|no]
sbc: update SBCCallRegistry only on positive replies to INVITE
sbc: call registry: more verbosity on new entry
Merge branch 'apogrebennyk/2.8+replaces_fix' into 1.4.3+spce2.8