Modernize autotools usage and split unittests into separate TESTS target
and use absolute path in build directory for zscanner tests.

Change-Id: I75b6d02b93d28cc9ff1354d5432d10b20cf734b5
Free all event nodes at once on exit.

Change-Id: I12e5a43c71243b0774d049b25973d34ae41b6078
journal: remove redundant magic string

Change-Id: I882697e314d3f3ef731ef531f3ea7462640606e7
zone: remove old function declaration

Change-Id: I2532a02610b91fd11d162136fda3ac2322d45766
RELNOTES: add new features for 1.3

norefs

Change-Id: I385434dd1a6b30ae28c1839ff421d0912ac47688
Use AM_CONDITIONAL(HAVE_RAGEL, ...) to rebuild ragel parser only if ragel is available

Change-Id: I904cf4ea0a99652f2a2370fde17af770b1273dc4