[win32] Cleanup: delete old project files
[win32] fix libexif project:
* debug config was broken and not used
* target subsystem was "Console" instead of "Windows"
Merge pull request #3525 from Karlson2k/win32_libexif_proj_fix_01

[win32] fix libexif project:
Merge pull request #3526 from Karlson2k/win32_projects_cleanup_02

Win32 projects cleanup 02
fixed: std::string::find* uses string::npos if char isn't found.
settings: fix best-matching-value detection for lookandfeel.skincolors/skintheme/soundskin
ActiveAE: fix segfault caused by dangling gui sounds
ActiveAE: feed only first 512 samples of an audio buffer into viz
Merge pull request #3531 from FernetMenta/aefixes

ActiveAE fixes - Make Pike happy (viz, settings segfault)
CurlFile: no need for forward declaration if header is included