Remove vendored usvfs and Windows-only usvfs code paths

The Linux port uses its own in-process FUSE VFS (FuseConnector), so
usvfs was dead weight: libs/usvfs/ was never built, usvfsconnector.cpp
was explicitly REMOVE_ITEM'd from the source list, and every call site
was already guarded by #ifdef _WIN32 with a working Linux branch (the
Windows build is also broken on this branch, since FUSE3 is a hard
find_package dependency).

- Drop libs/usvfs/ and src/src/usvfsconnector.{cpp,h}
- Collapse #ifdef _WIN32 / usvfs include branches in organizercore,
  mainwindow, settings, util, spawn
- Remove getUsvfsVersionString() and the "usvfs: ..." log field
- Remove vfs32/64DLLName APPPARAMs (nothing reads them)
- Relabel About dialog "usvfs:" row to "VFS: FUSE 3"

1 files changed, 0 insertions, 53 deletions

diff --git a/libs/usvfs/src/shared/shared_memory.h b/libs/usvfs/src/shared/shared_memory.h
deleted file mode 100644
index 28da34b..0000000
--- a/libs/usvfs/src/shared/shared_memory.h
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
-Userspace Virtual Filesystem
-
-Copyright (C) 2015 Sebastian Herbord. All rights reserved.
-
-This file is part of usvfs.
-
-usvfs is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-usvfs is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with usvfs. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#pragma once
-
-namespace bi = boost::interprocess;
-namespace bc = boost::container;
-
-namespace usvfs::shared
-{
-
-template <typename T>
-using OffsetPtrT = bi::offset_ptr<T, std::int32_t, std::uint64_t>;
-
-using VoidPointerT = OffsetPtrT<void>;
-
-// important: the windows shared memory mechanism, unlike other implementations,
-// automatically removes the SHM object when there are no more "subscribers".
-// MO currently depends on that feature!
-
-// managed_windows_shared_memory apparently doesn't support sharing between
-// 64bit and 32bit processes
-using managed_windows_shared_memory = bi::basic_managed_windows_shared_memory<
-    char, bi::rbtree_best_fit<bi::mutex_family, VoidPointerT, 8>, bi::iset_index>;
-
-using SharedMemoryT   = managed_windows_shared_memory;
-using SegmentManagerT = SharedMemoryT::segment_manager;
-
-using VoidAllocatorT = boost::container::scoped_allocator_adaptor<
-    boost::interprocess::allocator<void, SegmentManagerT>>;
-using CharAllocatorT = VoidAllocatorT::rebind<char>::other;
-
-using StringT = bc::basic_string<char, std::char_traits<char>, CharAllocatorT>;
-
-}  // namespace usvfs::shared