- KEA_LOCKFILE_DIR_FROM_BUILD renamed to KEA_LOCKFILE_DIR.
 - KEA_FROM_BUILD_LOCALSTATEDIR, KEA_LOCKFILE_DIR_FROM_BUILD removed
 - It is possible to disable lockfile now

Some tar implementations cannot or do not auto detect the compress format.
For example, I saw today:

$ tar xvf kea-0.9.tar.gz
tar: Cannot identify format. Searching...
tar: Cpio file name length 41449 is out of range
tar: Invalid header, starting valid header search.
...
tar: Cpio file name length 39676 is out of range
tar: End of archive volume 1 reached
tar: bcpio vol 1, 0 files, 3811899 bytes read, 0 bytes written in 1 secs (3811899 bytes/sec)
tar: Unexpected EOF on archive file

Did say 0.9-beta1 for 0.9 release for example.
So added the __VERSION__ macro.

Note that this may look ugly in the "git" branch or other
odd named versions but will match names if a dist tarball
was created from git master. But will be correct for official releases.

Okayed via jabber.

This was probably never seen anyways so I didn't adjust for Kea.
Okayed via jabber.

On line 21 use two tabs before the committer username.
On line 21 use a tab before the keyword type.

Conflicts:
	ChangeLog

Conflicts:
	src/lib/dhcpsrv/configuration.h

Conflicts:
	ChangeLog

Conflicts:
	ChangeLog

This is trivial fix so as I am committing it on my own discretion. Also,
this fix had already been reviewed and applied on master branch but
apparently disappeared after the recent git migration.

Also, removed multiple references to DHCP4_CONFIG_LOAD_FAIL from the
DHCPv4 server and DHCP6_CONFIG_LOAD_FAIL from the DHCPv6 server.