fixes and improvements

- directoryPosix: replace most methods with boost filesystem (but not
all: the latter cannot efficiently enumerate files AND query their
size/mtime)
- AllocatorChecker: better name for member functions
- file: move the File class here
- trace: bugfix
- io: move UnalignedWriter to write_buffer.cpp (basically the same
thing)
- vfs: remove unnecessary "vfs" warts from variable names
- vfs_tree: VfsFile now stores single Name/Size/MTime fields instead of
the FileInfo record (less clunky)
- vfs_path: use boost filesystem's version of the basename/extension
functions
- lf_alloc: remove (no longer necessary, won't be finished - not worth
the trouble)
- path_util: remove path_foreach_component (replaced by better path
traversal logic) and PathPackage (obsoleted by fs::path)

! resource loading code now receives VfsPath as its filename. there is
also OsPath (native absolute path) and Path (relative to binaries/data)

- tex is now independent of file loading code; it just en/decodes
in-memory buffers
- wdll_ver: clean up, use smart pointer to simplify bailout code
- wsdl: remove nonexistent failure path from calc_gamma (cruised by here
because SDL_SetGamme is failing once after a cold boot at work)
- wsnd: simplify OpenAL DLL search, use boost::filesystem
- wutil: Wow64 redirection is now packaged in a (RAII) class

This was SVN commit r5525.

source/simulation/TechnologyCollection.cpp

@@ -8,7 +8,7 @@
 
 void CTechnologyCollection::LoadFile( const VfsPath& pathname )
 {
-	CStrW basename(Basename(pathname));
+	const CStrW basename(fs::basename((const fs::path&)pathname));
 	m_techFilenames[basename] = pathname.string();
 }