Make sure the 'tsget' script is called 'tsget.pl' everywhere

The result is that we don't have to produce different names on
different platforms, and we won't have confusion on Windows depending
on if the script was built with mingw or with MSVC.

Partial fix for #3254
Reviewed-by: NMatt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6764)

CHANGES

@@ -9,6 +9,12 @@
 
  Changes between 1.1.0h and 1.1.1 [xx XXX xxxx]
 
+  *) The 'tsget' script is renamed to 'tsget.pl', to avoid confusion when
+     moving between systems, and to avoid confusion when a Windows build is
+     done with mingw vs with MSVC.  For POSIX installs, there's still a
+     symlink or copy named 'tsget' to avoid that confusion as well.
+     [Richard Levitte]
+
   *) Revert blinding in ECDSA sign and instead make problematic addition
      length-invariant. Switch even to fixed-length Montgomery multiplication.
      [Andy Polyakov]

Configurations/unix-Makefile.tmpl

@@ -121,7 +121,7 @@ INSTALL_ENGINES={- join(" ", map { dso($_) } @{$unified_info{install}->{engines}
 INSTALL_PROGRAMS={- join(" ", map { $_.$exeext } @{$unified_info{install}->{programs}}) -}
 {- output_off() if $disabled{apps}; "" -}
 BIN_SCRIPTS=$(BLDDIR)/tools/c_rehash
-MISC_SCRIPTS=$(BLDDIR)/apps/CA.pl $(BLDDIR)/apps/tsget
+MISC_SCRIPTS=$(BLDDIR)/apps/CA.pl $(BLDDIR)/apps/tsget.pl:tsget
 {- output_on() if $disabled{apps}; "" -}
 
 APPS_OPENSSL={- use File::Spec::Functions;
@@ -452,12 +452,25 @@ install_ssldirs:
 	@$(PERL) $(SRCDIR)/util/mkdir-p.pl $(DESTDIR)$(OPENSSLDIR)/misc
 	@set -e; for x in dummy $(MISC_SCRIPTS); do \
 		if [ "$$x" = "dummy" ]; then continue; fi; \
-		fn=`basename $$x`; \
-		$(ECHO) "install $$x -> $(DESTDIR)$(OPENSSLDIR)/misc/$$fn"; \
-		cp $$x $(DESTDIR)$(OPENSSLDIR)/misc/$$fn.new; \
+		x1=`echo "$$x" | cut -f1 -d:`; \
+		x2=`echo "$$x" | cut -f2 -d:`; \
+		fn=`basename $$x1`; \
+		$(ECHO) "install $$x1 -> $(DESTDIR)$(OPENSSLDIR)/misc/$$fn"; \
+		cp $$x1 $(DESTDIR)$(OPENSSLDIR)/misc/$$fn.new; \
 		chmod 755 $(DESTDIR)$(OPENSSLDIR)/misc/$$fn.new; \
 		mv -f $(DESTDIR)$(OPENSSLDIR)/misc/$$fn.new \
 		      $(DESTDIR)$(OPENSSLDIR)/misc/$$fn; \
+		if [ "$$x1" != "$$x2" ]; then \
+			ln=`basename "$$x2"`; \
+			: {- output_off() unless windowsdll(); "" -}; \
+			$(ECHO) "copy $(DESTDIR)$(OPENSSLDIR)/misc/$$ln -> $(DESTDIR)$(OPENSSLDIR)/misc/$$fn"; \
+			cp $(DESTDIR)$(OPENSSLDIR)/misc/$$fn $(DESTDIR)$(OPENSSLDIR)/misc/$$ln; \
+			: {- output_on() unless windowsdll();
+			     output_off() if windowsdll(); "" -}; \
+			$(ECHO) "link $(DESTDIR)$(OPENSSLDIR)/misc/$$ln -> $(DESTDIR)$(OPENSSLDIR)/misc/$$fn"; \
+			ln -sf $$fn $(DESTDIR)$(OPENSSLDIR)/misc/$$ln; \
+			: {- output_on() if windowsdll(); "" -}; \
+		fi; \
 	done
 	@$(ECHO) "install $(SRCDIR)/apps/openssl.cnf -> $(DESTDIR)$(OPENSSLDIR)/openssl.cnf.dist"
 	@cp $(SRCDIR)/apps/openssl.cnf $(DESTDIR)$(OPENSSLDIR)/openssl.cnf.new

apps/build.info

-{- our $tsget_name = $config{target} =~ /^(VC|vms)-/ ? "tsget.pl" : "tsget";
-   our @apps_openssl_src =
+{- our @apps_openssl_src =
        qw(openssl.c
           asn1pars.c ca.c ciphers.c cms.c crl.c crl2p7.c dgst.c dhparam.c
           dsa.c dsaparam.c ec.c ecparam.c enc.c engine.c errstr.c gendsa.c
@@ -33,7 +32,7 @@ ENDIF
   GENERATE[progs.h]=progs.pl $(APPS_OPENSSL)
   DEPEND[progs.h]=../configdata.pm
 
-  SCRIPTS=CA.pl {- $tsget_name -}
+  SCRIPTS=CA.pl tsget.pl
   SOURCE[CA.pl]=CA.pl.in
-  SOURCE[{- $tsget_name -}]=tsget.in
+  SOURCE[tsget.pl]=tsget.in
 ENDIF