Fix fc_vsnprintcf() to work correctly with format descriptors longer than 5 bytes.

Patch by Guillaume Melquiond <silene>

See patch #4402


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@24085 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Run libtoolize before autoconf

See bug #21452


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@24091 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Added icon for Statue of Zeus wonder.

Provided by gm1530

See bug #20030


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@24097 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Removed comment stating that event icons are not yet used, as it's no longer true.


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@24099 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Fixed reversed check if unit in non-native tile is in transport when sanity checking
the tile. 

See bug #21456


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@24100 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Fixed a crash when movement of the unboarding passenger causes ferry to get destroyed.

See bug #21462


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@24104 a0f10bec-cc02-0410-94fc-a9cfff90b4cd