Buildsystem/Windows: Add support for reading commithash and commitdate directly from the executable binaries.

To view this information, check the "Product Version" field in Properties on the respective daemon.

+ Fix worldserver/authserver .rc file layouts and content (now adheres to MS standards *sighs*)
+ Change .serv info output to show corename followed by the commit date and hash
+ Include showing the versionstring on worldserver startup completion (on Aokromes' request)

Thanks to Paradox for bugging me enough about it and the initial pull-request.

cmake/showoptions.cmake

@@ -1,8 +1,9 @@
 # output generic information about the core and buildtype chosen
 message("")
-message("* TrinityCore commithash : ${rev_hash_str}")
+message("* TrinityCore rev. hash  : ${rev_hash}")
+message("* TrinityCore rev. date  : ${rev_date}")
 if( UNIX )
-  message("* Build binaries in      : ${CMAKE_BUILD_TYPE} mode")
+  message("* TrinityCore buildtype  : ${CMAKE_BUILD_TYPE}")
 endif()
 message("")