adding autotesting for mssql server - windows only
Added MS SQL Server support
Bugfixes and cleanup MS SQL Server installation
- Fixed indentations.
- Fixed a bug in legacy.php: there was an error that was not checked for if the table 'fscache' did not exist in the database.
Merge pull request #1635 from irgsmirx/master-sqlserver

New/rebased/cleaned-up MS SQL Server support
fixing user for autotesting mssql
Merge branch 'master' into master-sqlserver
fixing undefined variables
fixing indent
write any database messages / non critical errors to the log - don't pollute the browser
fixing sql server syntax for database creation
final adoptions for mssql connectivity
Merge branch 'master' into master-sqlserver

Conflicts:
	lib/db.php
	lib/files/cache/cache.php
	lib/files/cache/legacy.php
	lib/setup.php
Merge branch 'master' into master-sqlserver
move2trash() handles keyfiles
Merge branch 'master' into master-sqlserver

Conflicts:
	lib/files/cache/cache.php
put all trash bin content in user/files_trashbin
restore filekeys from trash bin
delete keyfiles if file in trash bin gets deleted permanently
reuse delete() function in expire()