First effort towards a build target to create a Debian package.
Check for existence before removing deb staging and output dirs.

Mono's xbuild errors if the directory you're trying to remove
does not exist.
Make wrapper script executable
Fix syntax eror in control file.
Create deb output dir. dpkg-deb does not create directories.
Add deb staging directory to .gitignore
Remove utf-8 BOM from wrapper script.
Mark compiled dlls as not executable when making .deb.
Run lintian after building .deb.
Merge branch 'master' into deb
Include copyright and license files when creating .deb.
Suppress lintian warnings about missing changelog and extra license files.

Who cares about a changelog in /usr/share/doc? Users will look at
the project site.

Putting licenses for third-party libraries in separate files instead of
in the copyright file allows for reusing the notice.txt file from
the Windows packaging.
Emit build error if LicenseFiles is not set.
Make a clean completely remove the bin folder.
Make building .deb do a clean build.
Merge branch 'master' into deb
pgdbsc deb description
Deb description formatting, fix typo.
Fix mono dependency versions in deb control.

Use 2.10.8.1, not 2.10.1.
Use the system Mono.Security.dll.