rsyslog work log 33

Past day’s rsyslog work log:
– integrated patch from Peter Vrabec to change the build process to produce and from imtcp.c (in support of new gassapi
input module) – many thanks, Peter!
– applied patch by varmojfekoj to allow gssapi functionality to be
build as a separate plugin (so that gssapi and plain tcp
functionality can be individually distributed). Also inclulded
some other enhancements, most importantly initial compatibility
mode system
– added some information on old-style config to ABNF (probably
useful in getting us to a new config format)
– fixed bug in duplicate module load detection
– corrected config doc – IETF no longer intends to add facilities
– updated compatibility notes doc
– added some doc for imgssapi and imtcp input modules
– completed initial vmstk implementation
– begun implementing rsyslog virtual machine (vm class)
– worked a bit on type conversion (specified the interface)
– simplified var object, now only supports strings and numbers as
a single type
– worked a bit on var_t data type conversion
– added some thoughts on RainerScript
– worked a bit on conversion functions