Update nmake for VS 2017

Patch by Eric Lindblad, who asked for his email address not to be
published. [perl #131487]

(cherry picked from commit 58998b2)

Author: steve-m-hay

win32/Makefile

@@ -149,6 +149,8 @@ CCTYPE		= MSVC110FREE
 #CCTYPE		= MSVC140
 # Visual C++ 2015 Express Edition (aka Visual C++ 14.0) (free version)
 #CCTYPE		= MSVC140FREE
+# Visual C++ 2017 (aka Visual C++ 14.1) (all versions)
+#CCTYPE		= MSVC141
 
 #
 # If you are using Intel C++ Compiler uncomment this
@@ -228,7 +230,7 @@ CCTYPE		= MSVC110FREE
 # Running VCVARS32.BAT is *required* when using Visual C.
 # Some versions of Visual C don't define MSVCDIR in the environment,
 # so you may have to set CCHOME explicitly (spaces in the path name should
-# not be quoted)
+# not be quoted), for MSVC141 replace $(MSVCDIR) with $(VCToolsInstallDir)
 #
 CCHOME		= $(MSVCDIR)
 CCINCDIR	= $(CCHOME)\include
@@ -498,7 +500,8 @@ DEFINES		= -DWIN32 -D_CONSOLE -DNO_STRICT
 LOCDEFS		= -DPERLDLL -DPERL_CORE
 CXX_FLAG	= -TP -EHsc
 
-!IF "$(CCTYPE)" == "MSVC140" || "$(CCTYPE)" == "MSVC140FREE"
+!IF "$(CCTYPE)" == "MSVC140" || "$(CCTYPE)" == "MSVC140FREE" \
+    || "$(CCTYPE)" == "MSVC141"
 LIBC		= ucrt.lib
 !ELSE
 LIBC		= msvcrt.lib
@@ -513,7 +516,8 @@ OPTIMIZE	= -Od -MD -Zi
 LINK_DBG	= -debug
 !ELSE
 !IF  "$(CFG)" == "DebugFull"
-!IF "$(CCTYPE)" == "MSVC140" || "$(CCTYPE)" == "MSVC140FREE"
+!IF "$(CCTYPE)" == "MSVC140" || "$(CCTYPE)" == "MSVC140FREE" \
+    || "$(CCTYPE)" == "MSVC141"
 LIBC		= ucrtd.lib
 !ELSE
 LIBC		= msvcrtd.lib
@@ -553,7 +557,8 @@ DEFINES		= $(DEFINES) -D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE
 !ENDIF
 
 # Likewise for deprecated Winsock APIs in VC++ 14.0 for now.
-!IF "$(CCTYPE)" == "MSVC140" || "$(CCTYPE)" == "MSVC140FREE"
+!IF "$(CCTYPE)" == "MSVC140" || "$(CCTYPE)" == "MSVC140FREE" \
+    || "$(CCTYPE)" == "MSVC141"
 DEFINES		= $(DEFINES) -D_WINSOCK_DEPRECATED_NO_WARNINGS
 !ENDIF
 
@@ -577,7 +582,8 @@ LIBBASEFILES	= \
 		netapi32.lib uuid.lib ws2_32.lib mpr.lib winmm.lib \
 		version.lib odbc32.lib odbccp32.lib comctl32.lib
 
-!IF "$(CCTYPE)" == "MSVC140" || "$(CCTYPE)" == "MSVC140FREE"
+!IF "$(CCTYPE)" == "MSVC140" || "$(CCTYPE)" == "MSVC140FREE" \
+    || "$(CCTYPE)" == "MSVC141"
 !  IF  "$(CFG)" == "DebugFull"
 LIBBASEFILES	= $(LIBBASEFILES) msvcrtd.lib vcruntimed.lib
 !  ELSE
@@ -628,6 +634,8 @@ PRIV_LINK_FLAGS	= $(PRIV_LINK_FLAGS) "/manifestdependency:type='Win32' name='Mic
 RSC_FLAGS	= -DINCLUDE_MANIFEST
 !ENDIF
 
+# VS 2017 (VC++ 14.1) requires at minimum Windows 7 SP1 (with latest Windows Updates)
+
 # For XP support in >= VS 2013 (VC++ 12.0), subsystem is always in Config.pm
 # LINK_FLAGS else subsystem is only needed for EXE building, not XS DLL building
 # Console vs GUI makes no difference for DLLs, so use default for cleaner
@@ -988,7 +996,7 @@ perlglob$(o)  : perlglob.c
 	@echo.>>$@
 	@echo #ifndef _config_h_footer_>>$@
 	@echo #define _config_h_footer_>>$@
-!IF "$(CCTYPE)" == "MSVC140" || "$(CCTYPE)" == "MSVC140FREE"
+!IF "$(CCTYPE)" == "MSVC140" || "$(CCTYPE)" == "MSVC140FREE" || "$(CCTYPE)" == "MSVC141"
 	@echo #undef FILE_ptr>>$@
 	@echo #define FILE_ptr(fp) PERLIO_FILE_ptr(fp)>>$@
 	@echo #undef FILE_cnt>>$@