anchor.diff:  :: Purpose:       Tron's update checker, broken out from tron.bat as a function
   :: Requirements:  Must be called from Tron
   :: Author:        vocatus on reddit.com/r/TronScript ( vocatus.gate at gmail ) // PGP key: 0x07d1490f82a211a2
  -:: Version:       1.0.4 + Add missing :self_destruct code and fix sha256sums.txt character encoding. Thanks to /u/botopz
  +:: Version:       1.0.5 ! Fix edge case where self-destruct code would be incorrectly triggered by re-using Tron's global SELF_DESTRUCT variable
  +::                        check_update.bat now uses it's own internal "NUKE_OLD_VERSION" variable to check if we need to cleanup after an update. Thanks /u/wogmail
  +::                1.0.4 + Add missing :self_destruct code and fix sha256sums.txt character encoding. Thanks to /u/botopz
   ::                1.0.3 - Remove '--ca-certificate=stage_0_prep\check_update\bmrf.org.pem' declarative from wget calls, due to upgrading Tron's internal wget version to v1.18
   ::                1.0.2 + Import REPO_URL, REPO_BTSYNC_KEY, REPO_SCRIPT_DATE and REPO_SCRIPT_VERSION variables from tron.bat since they're only relevant here
   ::                1.0.1 ! Fix SSL encryption on update check and new version download. Previously we were skipping certificate checking due to cert errors. With this fix we now properly use the bundled .pem certificate to establish an SSL connection to the repo
  
positive.code: 			echo.
  			popd
  			pause
  			echo. && ENDLOCAL DISABLEDELAYEDEXPANSION && set SELF_DESTRUCT=yes
  		) else (
  			color 0c
  			echo %TIME% ^^! ERROR: Download FAILED the integrity check. Recommend manually
  
negative.code: :: Clean up after ourselves
  if exist "%TEMP%\*sums.txt" del "%TEMP%\*sums.txt"
  
  
  :: Blow away the old version if we downloaded a new version
  set CWD=%CD%
  if /i %NUKE_OLD_VERSION%==yes (
  	cd ..
  	del /f /q tron.bat >NUL 2>&1
  	%SystemDrive%
  