Change Jamfile default openssl path on Windows

The widely used Windows OpenSSL package[1] uses C:\OpenSSL-Win[32|64] as
the install location so set this as default in Jamfile for Windows. It
also means that the appveyor builds can be simplified by using their
installed OpenSSL.

Mingw is set to the same location so remove seperate specification.

[1]: https://slproweb.com/products/Win32OpenSSL.html

Jamfile

@@ -359,20 +359,13 @@ rule openssl-lib-path ( properties * )
 		# brew install openssl
 		OPENSSL_LIB = /usr/local/opt/openssl/lib ;
 	}
-	else if <target-os>windows in $(properties)
-		&& <toolset>gcc in $(properties)
-		&& $(OPENSSL_LIB) = ""
-	{
-		# on mingw, assume openssl is installed in c:\OpenSSL-Win32 by default
-		OPENSSL_LIB = c:\\OpenSSL-Win32\\lib ;
-	}
 	else if <target-os>windows in $(properties) && $(OPENSSL_LIB) = ""
 	{
-		# on windows, just assume openssl is installed to c:\openssl
+		# on windows, assume openssl is installed to c:\OpenSSL-Win32
 		if <address-model>64 in $(properties)
-		{ OPENSSL_LIB = c:\\openssl\\lib64 ; }
+		{ OPENSSL_LIB = c:\\OpenSSL-Win64\\lib ; }
 		else
-		{ OPENSSL_LIB = c:\\openssl\\lib ; }
+		{ OPENSSL_LIB = c:\\OpenSSL-Win32\\lib ; }
 	}
 
 	local result ;
@@ -392,21 +385,13 @@ rule openssl-include-path ( properties * )
 		# brew install openssl
 		OPENSSL_INCLUDE = /usr/local/opt/openssl/include ;
 	}
-	else if <target-os>windows in $(properties)
-		&& <toolset>gcc in $(properties)
-		&& $(OPENSSL_INCLUDE) = ""
-	{
-		# on mingw, assume openssl is installed in c:\OpenSSL-Win32 by default
-		OPENSSL_INCLUDE = c:\\OpenSSL-Win32\\include ;
-	}
 	else if <target-os>windows in $(properties) && $(OPENSSL_INCLUDE) = ""
 	{
-		# on windows, just assume openssl is installed to c:\openssl
-		# not sure if there's a better way to find out where it may be
+		# on windows, assume openssl is installed to c:\OpenSSL-Win32
 		if <address-model>64 in $(properties)
-		{ OPENSSL_INCLUDE = c:\\openssl\\include64 ; }
+		{ OPENSSL_INCLUDE = c:\\OpenSSL-Win64\\include ; }
 		else
-		{ OPENSSL_INCLUDE = c:\\openssl\\include ; }
+		{ OPENSSL_INCLUDE = c:\\OpenSSL-Win32\\include ; }
 	}
 
 	local result ;

appveyor.yml

@@ -37,19 +37,6 @@ install:
   - if not defined crypto ( set crypto=built-in )
   - if not defined linkflags ( set linkflags="" )
   - if not defined include ( set include="" )
-  - if %compiler% == msvc-14.0 if defined crypto if not exist openssl-1.0.1p-vs2015.7z (
-    echo downloading openssl-2015
-    & appveyor DownloadFile "https://www.npcglib.org/~stathis/downloads/openssl-1.0.1p-vs2015.7z"
-    )
-  - if %compiler% == msvc-14.0 if defined crypto (
-    echo extracting openssl-2015
-    & 7z x -oc:\ -aoa openssl-1.0.1p-vs2015.7z > nul
-    & rename c:\openssl-1.0.1p-vs2015 openssl
-    & copy c:\openssl\lib64\ssleay32MT.lib c:\openssl\lib64\ssleay32.lib
-    & copy c:\openssl\lib64\libeay32MT.lib c:\openssl\lib64\libeay32.lib
-    & copy c:\openssl\lib\ssleay32MT.lib c:\openssl\lib\ssleay32.lib
-    & copy c:\openssl\lib\libeay32MT.lib c:\openssl\lib\libeay32.lib
-    )
   - cd %ROOT_DIRECTORY%
   - set BOOST_ROOT=c:\Libraries\boost_1_63_0
   - set BOOST_BUILD_PATH=%BOOST_ROOT%\tools\build
@@ -67,9 +54,6 @@ install:
   - build.bat >nul
   - cd %ROOT_DIRECTORY%
 
-cache:
-  - openssl-1.0.1p-vs2015.7z
-
 build_script:
   # examples
   - cd %ROOT_DIRECTORY%\examples

docs/building.rst

@@ -235,7 +235,8 @@ For more build configuration flags see `Build configurations`_.
 When enabling linking against openssl (by setting the ``crypto`` feature to
 ``openssl``) the Jamfile will look in some default directory for the openssl
 headers and libraries. On macOS, it will look for the homebrew openssl package.
-On windows it will look in ``c:\openssl`` and MinGW in ``c:\OpenSSL-Win32``.
+On Windows, it will look in ``C:\OpenSSL-Win32``, or ``C:\OpenSSL-Win64`` if
+compiling in 64-bit.
 
 To customize the library path and include path for openssl, set the features
 ``openssl-lib`` and ``openssl-include`` respectively.
@@ -482,7 +483,7 @@ If you enabled test in the configuration step, to run them, run::
 
 building with other build systems
 ---------------------------------
-  
+
 If you're building in MS Visual Studio, you may have to set the compiler
 options "force conformance in for loop scope", "treat wchar_t as built-in
 type" and "Enable Run-Time Type Info" to Yes.