Here is small HOWTO release new version of Stratagus

You need some linux machine (ideally ubuntu) with:
 bzr, debhelper, devscripts, cmake, make, nsis, upx, gnupg

For windows installers you need:
 cmake toolchain file (see example)
 windows gcc cross compiler: g++-mingw-w64
 windows stratagus dependencies (from https://launchpad.net/~mingw-packages/+archive/ppa):
  libmikmod-mingw-w64-cross, libogg-mingw-w64-cross, libpng-mingw-w64-cross, libpthread-mingw-w64-cross, libsdl1.2-mingw-w64-cross,
  libtheora-mingw-w64-cross, libvorbis-mingw-w64-cross, lua5.1-mingw-w64-cross, tolua++-mingw-w64-cross, zlib-mingw-w64-cross

Download source code:
 bzr branch lp:stratagus && cd stratagus

Increase version in file:
 CMakeLists.txt

Update changelog in file:
 doc/changelog.html

Increase version and update changelog for debian:
 dch -i

Commit changes to bzr and create tag:
 bzr ci -m "Release version <version>"
 bzr tag <version>
 bzr push lp:stratagus

Create orig tarball + sign:
 bzr export ../stratagus_*.orig.tar.gz
 gpg --armor --sign --detach-sig ../stratagus_*.orig.tar.gz

Create ubuntu dsc packages:
 for release in karmic lucid maverick natty oneiric precise quantal; do \
 sed "0,/(\(.*\)) unstable;/s//(\1ubuntu1~$release) $release;/" -i debian/changelog; \
 bzr builddeb -S --builder="debuild -sa"; \
 sed "0,/(\(.*\)ubuntu.*) $release;/s//(\1) unstable;/" -i debian/changelog; \
 done

Create maemo dsc package:
 sed "0,/(\(.*\)) unstable;/s//(\1maemo1~fremantle) fremantle;/" -i debian/changelog
 bzr builddeb -S --builder="debuild -sa"
 sed "0,/(\(.*\)maemo.*) fremantle;/s//(\1) unstable;/" -i debian/changelog

Create win32 installer + sign:
 rm -rf build && mkdir build && cd build
 cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE=/path/to/win32/toolchain/file -DENABLE_STATIC=ON -DENABLE_NSIS=ON -DENABLE_UPX=ON -DENABLE_STRIP=ON ..
 make && mv Stratagus-*.exe ../../ && cd ..
 gpg --armor --sign --detach-sig ../Stratagus-*.exe

Create win64 installer + sign:
 rm -rf build && mkdir build && cd build
 cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE=/path/to/win64/toolchain/file -DENABLE_STATIC=ON -DENABLE_NSIS=ON -DENABLE_STRIP=ON ..
 make && mv Stratagus-*-x86_64.exe ../../ && cd ..
 gpg --armor --sign --detach-sig ../Stratagus-*-x86_64.exe

Create new version on launchpad:
 via web interface on https://launchpad.net/stratagus/trunk/+addrelease

Upload orig tarball and windows installers with signatures:
 via web interface on https://launchpad.net/stratagus/+download

Upload ubuntu dsc packages to stratagus PPA:
 dput ppa:stratagus/ppa ../stratagus_*ubuntu*_source.changes

Upload maemo dsc package to Maemo Extras-devel:
 scp ../stratagus_*.orig.tar.gz ../stratagus_*maemo*.debian.tar.gz ../stratagus_*maemo*_source.changes ../stratagus_*maemo*.dsc drop.maemo.org:/var/www/extras-devel/incoming-builder/fremantle/

Example of cmake win32 toolchain file for windows:
 SET(CMAKE_SYSTEM_NAME Windows)
 SET(CMAKE_C_COMPILER i686-w64-mingw32-gcc)
 SET(CMAKE_CXX_COMPILER i686-w64-mingw32-g++)
 SET(CMAKE_RC_COMPILER i686-w64-mingw32-windres)
 SET(CMAKE_FIND_ROOT_PATH /usr/i686-w64-mingw32)
 SET(CMAKE_PREFIX_PATH /usr/i686-w64-mingw32)
 SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
 SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
 SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)