--version: Provide additional info about libquvi

When built with libquvi:
  * 0.9: Append {time,target,(cc)flags,...} to the output
  * 0.4: Use QUVI_VERSION_LONG instead of QUVI_VERSION

Signed-off-by: Toni Gundogdu <legatvs@gmail.com>
configure.ac: AC_DEFINE_UNQUOTED: CXXFLAGS and CXX

Other:
 * Remove unused AC_DEFINE_UNQUOTED([CANONICAL_HOST])

Signed-off-by: Toni Gundogdu <legatvs@gmail.com>
--version: Add CXX and CXXFLAGS to the output

Signed-off-by: Toni Gundogdu <legatvs@gmail.com>
Merge branch 'tg/next__ext__version_output' into next
FIX: cc/input.cpp: error: "clog" is not a member of "std"

Include iostream to fix this with some configurations.
  (found on Debian Squeeze, gcc 4.4.5, Boost 1.42)

Signed-off-by: Toni Gundogdu <legatvs@gmail.com>