Reverts silly grammar changes.

Espreon please stop changing the code to your favourite flavour of
English, again it cost me a lot of time to find a bug caused by your
changes.

(Reverts r55736.)

git-svn-id: http://svn.gna.org/svn/wesnoth/trunk@56277 75b3775d-3801-0410-9e12-e2e43121521d
Converts a function pointer to boost::function.

git-svn-id: http://svn.gna.org/svn/wesnoth/trunk@56278 75b3775d-3801-0410-9e12-e2e43121521d
Converts a function pointer to boost::function.

git-svn-id: http://svn.gna.org/svn/wesnoth/trunk@56279 75b3775d-3801-0410-9e12-e2e43121521d
Converts a function pointer to boost::function.

git-svn-id: http://svn.gna.org/svn/wesnoth/trunk@56280 75b3775d-3801-0410-9e12-e2e43121521d
Converts a function pointer to boost::function.

git-svn-id: http://svn.gna.org/svn/wesnoth/trunk@56281 75b3775d-3801-0410-9e12-e2e43121521d
Change from virtual to normal inheritance.

The virtual inheritance is not required in this case I don't expect it be
needed in the future either.

git-svn-id: http://svn.gna.org/svn/wesnoth/trunk@56282 75b3775d-3801-0410-9e12-e2e43121521d
Change from virtual to normal inheritance.

The virtual inheritance is not required in this case I don't expect it be
needed in the future either.

git-svn-id: http://svn.gna.org/svn/wesnoth/trunk@56283 75b3775d-3801-0410-9e12-e2e43121521d
Change from virtual to normal inheritance.

The virtual inheritance is not required in this case I don't expect it be
needed in the future either.

git-svn-id: http://svn.gna.org/svn/wesnoth/trunk@56284 75b3775d-3801-0410-9e12-e2e43121521d
Change from virtual to normal inheritance.

The virtual inheritance is not required in this case I don't expect it be
needed in the future either.

git-svn-id: http://svn.gna.org/svn/wesnoth/trunk@56285 75b3775d-3801-0410-9e12-e2e43121521d
Change from virtual to normal inheritance.

The virtual inheritance is not required in this case I don't expect it be
needed in the future either.

git-svn-id: http://svn.gna.org/svn/wesnoth/trunk@56286 75b3775d-3801-0410-9e12-e2e43121521d
Remove unneeded includes.

git-svn-id: http://svn.gna.org/svn/wesnoth/trunk@56287 75b3775d-3801-0410-9e12-e2e43121521d
Fix some doxygen warnings.

git-svn-id: http://svn.gna.org/svn/wesnoth/trunk@56288 75b3775d-3801-0410-9e12-e2e43121521d
Fix a doxygen warning.

git-svn-id: http://svn.gna.org/svn/wesnoth/trunk@56289 75b3775d-3801-0410-9e12-e2e43121521d
Fix a doxygen warning.

git-svn-id: http://svn.gna.org/svn/wesnoth/trunk@56290 75b3775d-3801-0410-9e12-e2e43121521d
Fix some doxygen warnings.

git-svn-id: http://svn.gna.org/svn/wesnoth/trunk@56291 75b3775d-3801-0410-9e12-e2e43121521d
Fix some doxygen warnings.

git-svn-id: http://svn.gna.org/svn/wesnoth/trunk@56292 75b3775d-3801-0410-9e12-e2e43121521d
Fix a doxygen warning.

git-svn-id: http://svn.gna.org/svn/wesnoth/trunk@56293 75b3775d-3801-0410-9e12-e2e43121521d