Added the new and changed libraries needed for gettext. Removed old
copies of the libraries that are no longer needed or provided by
the new ones. Added the German translation file to the installer.
1. Switched to Modern UI 2.
2. The Matroska logo is used during uninstallation as well.
3. Cleanup; moved code blocks around.
4. Changed the branding from the standard "NSIS installation system..."
string to something with "mkvtoolnix...".
5. Prepared the code to contain a build number in the product name;
the build number is empty for releases and will be set for pre-builds
by my automated build script.
Fixes for bug 327.
Removed old functions and replaced them with calls
to builtin/provided newer functions. Requires NSIS 2.42
or at least a System.dll plugin with the "Call" function
compiled in.
Part of a fix for bug 327.
