Fix indents

Each indent should be four spaces rather than a single tab.
Add missing installer.ini files

Add missing installer.ini files to preserve app's language settings.
Filename case change workaround
Keep filename case consistent
Update to Spybot - Search & Destroy 2.4
Update to DSynchronize 2.30.6
Update to Unvanquished 0.29
Remove working directory

Remove working directory, as it apparently is not needed.
Update to Orwell Dev-C++ 5.7.0
Update to Marble 1.8.3
Update to Orwell Dev-C++ 5.7.1
Update to OpenTTD 1.4.2
Update to Marble 1.9.0
Update to Unvanquished 0.30
Update to Cppcheck 1.66
Remove duplicate text from help
Remove dev test splash screen
File rename workaround
Fix filename case
Add DSpeech Portable 1.60 Dev Test 2