Use endash in date ranges

Source commit: 183a97acb9b052a1986d1ffc4638b2eb013102f4

source/resource/TextsCore1.rc

@@ -428,7 +428,7 @@ BEGIN
   VERSION_BUILD, "Build"
   VERSION_DEV_BUILD, "Dev Build"
   VERSION_DEBUG_BUILD, "Debug Build"
-  VERSION_DONT_DISTRIBUTE, "- Do NOT distribute"
+  VERSION_DONT_DISTRIBUTE, "– Do NOT distribute"
   WEBDAV_EXTENSION_INFO, "The server supports these WebDAV extensions:"
   COPY_PARAM_PRESET_EXCLUDE_ALL_DIR, "Exclude &directories"
   SCRIPT_CHECKSUM_DESC, "Calculates checksum of remote file"
@@ -458,16 +458,16 @@ BEGIN
 
   CORE_VARIABLE_STRINGS, "CORE_VARIABLE"
   PUTTY_BASED_ON, "SSH and SCP code based on PuTTY %s"
-  PUTTY_COPYRIGHT, "Copyright © 1997-2020 Simon Tatham"
+  PUTTY_COPYRIGHT, "Copyright © 1997–2020 Simon Tatham"
   PUTTY_URL, "https://www.chiark.greenend.org.uk/~sgtatham/putty/"
   FILEZILLA_BASED_ON2, "FTP code based on FileZilla"
   FILEZILLA_COPYRIGHT2, "Copyright © Tim Kosse"
   FILEZILLA_URL, "https://filezilla-project.org/"
   OPENSSL_BASED_ON, "This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit %s."
-  OPENSSL_COPYRIGHT2, "Copyright © 1998-%s The OpenSSL Project"
+  OPENSSL_COPYRIGHT2, "Copyright © 1998–%s The OpenSSL Project"
   OPENSSL_URL, "https://www.openssl.org/"
   NEON_BASED_ON2, "WebDAV/HTTP code based on neon library %s"
-  NEON_COPYRIGHT, "Copyright © 1999-2020 Joe Orton"
+  NEON_COPYRIGHT, "Copyright © 1999–2020 Joe Orton"
   NEON_URL, "https://notroj.github.io/neon/"
   EXPAT_BASED_ON, "eXpat library %s"
   EXPAT_URL, "http://www.libexpat.org/"

source/resource/TextsWin1.rc

@@ -654,7 +654,7 @@ BEGIN
         COPY_LOCAL_MOVE_CAPTION, "Move"
 
         WIN_VARIABLE_STRINGS, "WIN_VARIABLE"
-        WINSCP_COPYRIGHT, "Copyright © 2000-2021 Martin Prikryl"
+        WINSCP_COPYRIGHT, "Copyright © 2000–2021 Martin Prikryl"
         HOMEPAGE_URL, "https://winscp.net/"
         HISTORY_URL, "https://winscp.net/eng/docs/history"
         FORUM_URL, "https://winscp.net/forum/"