The allocation engine is now pointed to by a shared pointer.  Previously
it was pointed toi by a raw pointer and not deleted in the destructor.
Also, use an automatic variable to hold the DHCP6 server in the
unit tests.

- several parameters are now const
- OS-specific code moved from iface_mgr.cc to iface_mgr_linux.cc
- C-style casts replaced with a casting framework
  (see lib/util/io/pktinfo_utilities.h)
- added lib/util/range_utilities.h for methods that operate on
  container's ranges (isRangeZero and fillRandom)
- many other minor corrections

- Migrated from boost::shared_array to std::vector<uint8>
- Pkt6 now have all fields private, getters/setters implemented
- Many smaller clean-ups
- Tests updated to follow new procedure
- isc::util::OutputBuffer is now used

- DHCPv6 server now sends DNS-SERVERS option
- refactored processSolicit(), processRequest()
- added appendDefaultOptions(), appendRequestedOptions(), assignLeases()
- many parameters are now const &
- const HARDCODDED_* parameters added for similar customizations
- IfaceMgr::openSockets6() now skips loopback, down, or unicast interfaces.

Note: this fix is also present on other branches.

- IfaceMgr::Iface is now a class, not a struct.
- openSockets() now takes one argument that specifies port number
- Added missing doxygen comments
- Comments improved

- Dhcpv6Srv::process*() methods does not use references anymore
- Dhcpv6Srv::shutdown variable added for ordered shutdown procedure
- Dhcpv6Srv is now in isc::dhcp namespace
- Dhcpv6Srv is now derived from boot/noncopyable
- IfaceMgr methods and fields are now commented appropriately
- IfaceMgr
- Dhcpv6Srv friend declaration removed
- Dhcpv6SrvTest now uses derived class to access protected methods
- Dhcpv6SrvTest Solicit_Basic test now includes client-id, checks for
  received client-id, server-id and content of ia
- IfaceMgrTest minor improvements

See comments in #1186 ticket for extensive list of smaller changes
and reasons behind them.

- include paths fixed
- dangling spaces removed
- many parameters are now passed by reference
- added doxygen comments for all methods in dhcp6_srv.h
- src/bin/dhcp6/Makefile.am no longer references Pkt6.{cc|h}

Loopback interface name is now constant;
Function comments added;

Advertise is not perfect yet:
- server-id is missing
- client-id conveys invalid content

 - IfaceMgr now uses shared_ptr.
 - skeleton functions for specific message processing added.
 - tests fixed.

 - Added Addr6 (IPv6 address wrapper)
 - Added Pkt6 (generic IPv6 packet class)
 - Added IfaceMgr (provides information about available interfaces,
   opens sockets, sends and receives packets)
 - Added Dhcpv6Srv - a dummy echo server for now

* Logger implementation now not created until logger is first used.
* Messages are now "const char*" to avoid problems if a reference
  to a message is made in a static initialization.
* Message compiler now recognises $NAMESPACE directive

First cut at the logging module.  Still lacking configuration and
basic appenders.

git-svn-id: svn://bind10.isc.org/svn/bind10/branches/trac438@4169 e5f2f494-b856-4b98-b285-d166d9295462

git-svn-id: svn://bind10.isc.org/svn/bind10/branches/trac289@2733 e5f2f494-b856-4b98-b285-d166d9295462

git-svn-id: svn://bind10.isc.org/svn/bind10/branches/trac289@2730 e5f2f494-b856-4b98-b285-d166d9295462

git-svn-id: svn://bind10.isc.org/svn/bind10/branches/trac241@2490 e5f2f494-b856-4b98-b285-d166d9295462

git-svn-id: svn://bind10.isc.org/svn/bind10/trunk@1360 e5f2f494-b856-4b98-b285-d166d9295462

moved tests into unittests/ subdirectory
added boostlibs ldd flag if needed


git-svn-id: svn://bind10.isc.org/svn/bind10/trunk@1321 e5f2f494-b856-4b98-b285-d166d9295462

This is based on ideas done in experiments/jreed-layout, but
I manually did this again.

Moved around directory structures.
A single python subdirectory under src/lib for single "isc" module.
No "cpp" directories.

No pyshared or includes symlink trees.

I tested running the c++ tests and python tests.
I tested running run_bind10.sh from source tree (with nothing installed).
I tested running bind10 from installed (after moving source).


git-svn-id: svn://bind10.isc.org/svn/bind10/trunk@1120 e5f2f494-b856-4b98-b285-d166d9295462

git-svn-id: svn://bind10.isc.org/svn/bind10/trunk@1018 e5f2f494-b856-4b98-b285-d166d9295462

ticket #50 for full details)


git-svn-id: svn://bind10.isc.org/svn/bind10/trunk@988 e5f2f494-b856-4b98-b285-d166d9295462

git-svn-id: svn://bind10.isc.org/svn/bind10/branches/jinmei-dnsrdata2@742 e5f2f494-b856-4b98-b285-d166d9295462

git-svn-id: svn://bind10.isc.org/svn/bind10/branches/parkinglot@530 e5f2f494-b856-4b98-b285-d166d9295462