[Lognorm] Pull request for tokenized and regex field types

[singh.janmejay]

Hi,

These patch-sets complete tokenized field-type and regex field-type support
+ the rscript side features required for effective use of json-arrays in
rulesets.

Some other changes include fixes for memory-leak and invalid memory access
in liblognorm in non-happy-path flows + testing-setup for liblognorm (with
optional and transparent valgrind support).

Summary:
- tokenized field-type (integration-tests with rsyslog, documentation etc)
- regex support (tests, integration-tests, documentation)
- memory access/leak bug fixes
- testing env setup for liblognorm
- rscript support for json-array subscripting and 'foreach' loop
- rscript support for 'reset' statement, which as opposed to 'set' always
overwrites old value, regardless of the type)
- dedicated page for rscript control-structures
- detailed documentation around behaviour of rscript 'set', 'unset' and
'reset'

The patch-sets go in the following order:
https://github.com/rsyslog/liblognorm/pull/9
https://github.com/rsyslog/rsyslog/pull/149
https://github.com/rsyslog/rsyslog-doc/pull/98

-- 
Regards,
Janmejay
http://codehunk.wordpress.com
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