Remove BCC mentions from documentation

docs/doxygen/mainpages/const_cpp.h

@@ -120,7 +120,7 @@ compiler used.
 
 @beginDefList
 @itemdef{__BORLANDC__, Borland C++. The value of the macro corresponds
-                        to the compiler version: 500 is 5.0.}
+                        to the compiler version: 500 is 5.0 (not used any more).}
 @itemdef{__DIGITALMARS__, Digital Mars (not used any more).}
 @itemdef{__GNUG__, Gnu C++ on any platform, see also wxCHECK_GCC_VERSION}
 @itemdef{__GNUWIN32__, Gnu-Win32 compiler, see also wxCHECK_W32API_VERSION}

docs/doxygen/mainpages/devtips.h

@@ -28,10 +28,6 @@ following section before any other includes:
 // For compilers that support precompilation, includes "wx.h".
 #include <wx/wxprec.h>
 
-#ifdef __BORLANDC__
-#   pragma hdrstop
-#endif
-
 #ifndef WX_PRECOMP
     // Include your minimal set of headers here, or wx.h
 #   include <wx/wx.h>
@@ -44,8 +40,8 @@ The file @c "wx/wxprec.h" includes @c "wx/wx.h". Although this incantation may
 seem quirky, it is in fact the end result of a lot of experimentation, and
 several Windows compilers to use precompilation which is largely automatic for
 compilers with necessary support. Currently it is used for Visual C++
-(including embedded Visual C++), Borland C++ and newer versions of GCC. Some
-compilers might need extra work from the application developer to set the build
+(including embedded Visual C++) and newer versions of GCC. Some compilers 
+might need extra work from the application developer to set the build
 environment up as necessary for the support.
 
 
@@ -110,9 +106,8 @@ and this must not be changed.
 On Microsoft Windows, wxWidgets has a different set of makefiles for each
 compiler, because each compiler's @c 'make' tool is slightly different. Popular
 Windows compilers that we cater for, and the corresponding makefile extensions,
-include: Microsoft Visual C++ (.vc), Borland C++ (.bcc) and MinGW/Cygwin
-(.gcc). Makefiles are provided for the wxWidgets library itself, samples,
-demos, and utilities.
+include: Microsoft Visual C++ (.vc) and MinGW/Cygwin (.gcc). Makefiles are 
+provided for the wxWidgets library itself, samples, demos, and utilities.
 
 On Linux and macOS, you use the @c 'configure' command to generate the
 necessary makefiles. You should also use this method when building with
@@ -259,7 +254,7 @@ its own run-time type information system, implemented using macros.
 
 @subsection page_multiplatform_cpp_precompiledheaders Precompiled Headers
 
-Some compilers, such as Borland C++ and Microsoft C++, support precompiled
+Some compilers, such as Microsoft C++, support precompiled
 headers. This can save a great deal of compiling time. The recommended approach
 is to precompile @c "wx.h", using this precompiled header for compiling both
 wxWidgets itself and any wxWidgets applications. For Windows compilers, two

docs/doxygen/mainpages/introduction.h

@@ -94,9 +94,9 @@ primary supported compiler is GNU g++.
 supports 32 or 64 bit Intel Macs running macOS 10.10 or later. The port can be
 built either with g++ or clang.
 
-Other platforms (e.g. iOS - with a minimum requirement of iOS 13), compilers (Borland C++
-under Windows, Sun CC, HP-UX aCC, IBM xlC or SGI mipsPro under Unix) and ports (
-wxQT, wxGTK1, wxX11, wxDFB...) are also supported but to a lesser extent.
+Other platforms (e.g. iOS - with a minimum requirement of iOS 13), compilers 
+(Sun CC, HP-UX aCC, IBM xlC or SGI mipsPro under Unix) and ports (wxQT, wxGTK1, 
+wxX11, wxDFB...) are also supported but to a lesser extent.
 Please see the @subpage page_port "platform details page" for more information.
 
 There are no CPU speed requirements but the faster (and more) CPU(s) you have,

docs/doxygen/mainpages/platdetails.h

@@ -96,8 +96,8 @@ and candy of newer interfaces like GTK.
 wxMSW is a port of wxWidgets for the Windows platforms (Windows XP and later
 are supported). wxMSW provides native look and feel for each Windows version.
 This port can be compiled with several compilers including Microsoft Studio
-VC++ 2003 or later, Borland 5.5, MinGW32, Cygwin as well as cross-compilation
-with a Linux-hosted MinGW32 tool chain.
+VC++ 2003 or later, MinGW32, Cygwin as well as cross-compilation with a 
+Linux-hosted MinGW32 tool chain.
 
 @subpage plat_msw_install "Build and Install Instructions"