Add separate project file for SDL-enabled conio

src/conio/conio_sdl.dsp

+# Microsoft Developer Studio Project File - Name="conio" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "Win32 (x86) Static Library" 0x0104
+
+CFG=conio - Win32 Debug
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,
+!MESSAGE use the Export Makefile command and run
+!MESSAGE 
+!MESSAGE NMAKE /f "conio_sdl.mak".
+!MESSAGE 
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE 
+!MESSAGE NMAKE /f "conio_sdl.mak" CFG="conio - Win32 Debug"
+!MESSAGE 
+!MESSAGE Possible choices for configuration are:
+!MESSAGE 
+!MESSAGE "conio - Win32 Release" (based on "Win32 (x86) Static Library")
+!MESSAGE "conio - Win32 Debug" (based on "Win32 (x86) Static Library")
+!MESSAGE 
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+CPP=cl.exe
+RSC=rc.exe
+
+!IF  "$(CFG)" == "conio - Win32 Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "Release"
+# PROP BASE Intermediate_Dir "Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "msvc.win32.release"
+# PROP Intermediate_Dir "msvc.win32.release_mt"
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_MBCS" /D "_LIB" /YX /FD /c
+# ADD CPP /nologo /MT /W3 /GX /O2 /I "." /I "..\xpdev" /I "..\..\include\sdl" /D "NDEBUG" /D "WIN32" /D "_MBCS" /D "_LIB" /D "LINK_LIST_THREADSAFE" /D "_CRT_SECURE_NO_DEPRECATE" /D "_CRT_NONSTDC_NO_DEPRECATE" /D "WITH_SDL" /YX /FD /Zm400 /c
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LIB32=link.exe -lib
+# ADD BASE LIB32 /nologo
+# ADD LIB32 /nologo
+
+!ELSEIF  "$(CFG)" == "conio - Win32 Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "Debug"
+# PROP BASE Intermediate_Dir "Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "msvc.win32.debug"
+# PROP Intermediate_Dir "msvc.win32.debug_mt"
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /W3 /Gm /GX /ZI /Od /D "WIN32" /D "_DEBUG" /D "_MBCS" /D "_LIB" /YX /FD /GZ /c
+# ADD CPP /nologo /MTd /W3 /Gm /GX /ZI /Od /I "." /I "..\xpdev" /I "..\..\include\sdl" /D "_DEBUG" /D "WIN32" /D "_MBCS" /D "_LIB" /D "LINK_LIST_THREADSAFE" /D "_CRT_SECURE_NO_DEPRECATE" /D "_CRT_NONSTDC_NO_DEPRECATE" /D "WITH_SDL" /YX /FD /GZ /Zm400 /c
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LIB32=link.exe -lib
+# ADD BASE LIB32 /nologo
+# ADD LIB32 /nologo
+
+!ENDIF 
+
+# Begin Target
+
+# Name "conio - Win32 Release"
+# Name "conio - Win32 Debug"
+# Begin Source File
+
+SOURCE=.\allfonts.c
+# End Source File
+# Begin Source File
+
+SOURCE=.\ansi_cio.c
+# End Source File
+# Begin Source File
+
+SOURCE=.\bitmap_con.c
+# End Source File
+# Begin Source File
+
+SOURCE=.\ciolib.c
+# End Source File
+# Begin Source File
+
+SOURCE=.\cterm.c
+# End Source File
+# Begin Source File
+
+SOURCE=.\mouse.c
+# End Source File
+# Begin Source File
+
+SOURCE=.\sdl_con.c
+# End Source File
+# Begin Source File
+
+SOURCE=.\SDL_win32_main.c
+# End Source File
+# Begin Source File
+
+SOURCE=.\sdlfuncs.c
+# End Source File
+# Begin Source File
+
+SOURCE=.\vidmodes.c
+# End Source File
+# Begin Source File
+
+SOURCE=.\win32cio.c
+# End Source File
+# End Target
+# End Project