added:

* win32_slim.h: includes the minimal version of windows.h
modified:
 * cthread: added lock_t c++ class
 * os: added getUserName()
 * socket: modified socket_len_t to sk_len_t to better follow naming convetions in file
 * str: added operator std::string() to str_t

win32_slim.h

@@ -0,0 +1,57 @@
+#pragma once
+
+#ifndef WIN32_LEAN_AND_MEAN
+  #define WIN32_LEAN_AND_MEAN
+#endif
+
+#ifndef WIN32_EXTRA_LEAN
+	#define WIN32_EXTRA_LEAN
+#endif
+
+#define NOIME
+#define NOWINRES
+#define NOGDICAPMASKS
+#define NOVIRTUALKEYCODES
+#define NOWINMESSAGES
+#define NOWINSTYLES
+#define NOSYSMETRICS
+#define NOMENUS
+#define NOICONS
+#define NOKEYSTATES
+#define NOSYSCOMMANDS
+#define NORASTEROPS
+#define NOSHOWWINDOW
+#define OEMRESOURCE
+#define NOATOM
+#define NOCLIPBOARD
+#define NOCOLOR
+#define NOCTLMGR
+#define NODRAWTEXT
+#define NOGDI
+#define NOUSER
+#define NOMB
+#define NOMEMMGR
+#define NOMETAFILE
+#define NOMINMAX
+#define NOMSG
+#define NOOPENFILE
+#define NOSCROLL
+#define NOSERVICE
+#define NOSOUND
+#define NOTEXTMETRIC
+#define NOWH
+#define NOWINOFFSETS
+#define NOCOMM
+#define NOKANJI
+#define NOHELP
+#define NOPROFILER
+#define NODEFERWINDOWPOS
+#define NOMCX
+#define NOIME
+#define NOPROXYSTUB
+#define NOIMAGE
+#define NO
+#define NOTAPE
+#define ANSI_ONLY
+
+#include <windows.h>