Remove MSVC6 support.

Don't support this compiler any more, this allows to get rid of tons of
MSVC6-specific workarounds, in particular we can now use Bind() and natural
template functions calls in the library code.

Also remove MSVC6 project and solution files and don't generate them when
bakefile_gen is ran any more (removing the remaining occurrences of msvc6prj
from the bakefiles results in weird bake-time errors, so it's simpler to just
leave them there).

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76532 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/changes_30.txt

@@ -534,7 +534,7 @@ Build system changes
   WXUNIV=1 or UNICODE=0 command line parameter respectively.
 
 - The manifest is not included by wx/msw/wx.rc any longer for MSVC compiler.
-  If you're using MSVC 6 or 7 which require it, you must explicitly define
+  If you're using MSVC 7 which requires it, you must explicitly define
   wxUSE_RC_MANIFEST=1 and also predefine WX_CPU_X86 in the resource compiler
   options in your project file.
 

docs/doxygen/mainpages/const_wxusedef.h

@@ -350,8 +350,8 @@ manifest from wxWidgets RC file. See also wxUSE_RC_MANIFEST.}
 @itemdef{wxUSE_POSTSCRIPT_ARCHITECTURE_IN_MSW, Use PS printing in wxMSW.}
 @itemdef{wxUSE_PS_PRINTING, See src/msw/dcprint.cpp file.}
 @itemdef{wxUSE_RC_MANIFEST, Include manifest for common controls library v6
-from wxWidgets RC file. This may be needed to be defined explicitly for MSVC 6
-and 7 (98 and 2003) only as later versions of MSVC generate this manifest
+from wxWidgets RC file. This may be needed to be defined explicitly for MSVC 7
+(a.k.a. MSVS 2003) only as later versions of MSVC generate this manifest
 themselves and the manifest generation is enabled by default for the other
 compilers. See also wxUSE_NO_MANIFEST.}
 @itemdef{wxUSE_REGKEY, Use wxRegKey class.}

docs/doxygen/mainpages/platdetails.h

@@ -146,9 +146,9 @@ wxMSW is a port of wxWidgets for the Windows platforms including Windows 95,
 98, ME, 2000, NT, XP and Vista in ANSI and Unicode modes (for Windows 9x and ME
 through the MSLU extension library). wxMSW ensures native look and feel for XP
 when using wxWidgets version 2.3.3 or higher. wxMSW can be compiled with a
-great variety of compilers including Microsoft Studio VC++, Borland 5.5,
-MinGW32, Cygwin and Watcom as well as cross-compilation with a Linux-hosted
-MinGW32 tool chain.
+great variety of compilers including Microsoft Studio VC++ 2003 or later,
+Borland 5.5, MinGW32, Cygwin and Watcom as well as cross-compilation with
+a Linux-hosted MinGW32 tool chain.
 
 For further information, please see the files in docs/msw in the distribution.
 

docs/msw/install.txt

@@ -96,11 +96,11 @@ Microsoft Visual C++ Compilation
 
 * From the IDE using the provided project files:
 
-Ready to use project files are provided for VC++ versions 6, 7, 8, 9,
-10, 11 and 12 (also known as MSVS 6, 2003, 2005, 2008, 2010, 2012 and 2013
+Ready to use project files are provided for VC++ versions 7, 8, 9,
+10, 11 and 12 (also known as MSVS 2003, 2005, 2008, 2010, 2012 and 2013
 respectively).
 
-Simply open wx_vcN.sln (for N=7, 8, 9, 10, 11 or 12) or wx.dsw (for VC6) file,
+Simply open wx_vcN.sln (for N=7, 8, 9, 10, 11 or 12) file,
 select the appropriate configuration (Debug or Release, static or DLL)
 and build the solution. Notice that when building a DLL configuration,
 you may need to perform the build several times because the projects
@@ -495,7 +495,7 @@ following to use wxWidgets:
   - _UNICODE unless you want to use deprecated ANSI build of wxWidgets.
   - NDEBUG if you want to build in release mode, i.e. disable asserts.
   - WXUSINGDLL if you are using DLL build of wxWidgets.
-* If using MSVC 6 or 7 only (i.e. not for later versions), also define
+* If using MSVC 7 only (i.e. not for later versions), also define
   wxUSE_RC_MANIFEST=1 and WX_CPU_X86.
 * Add $WXWIN/lib/prefix_lib-or-dll to the libraries path. The prefix depends
   on the compiler, by default it is "vc" for MSVC, "gcc" for g++ and so on.

docs/tech/tn0017.txt

@@ -13,7 +13,7 @@ I. CppUnit Installation
    (latest version as of the time of this writing is 1.10.2)
 
 2. Build the library:
- a) Under Windows using VC++ (versions 6, 7, 8 & 9 work):
+ a) Under Windows using VC++:
     - build everything in CppUnitLibraries.dsw work space
     - add include and lib subdirectories of the directory
       where you installed cppunit to the compiler search path