note duplicated gitrev build process

SConstruct

@@ -82,6 +82,7 @@ if env['debug']:
 		env.Append(CCFLAGS=['/Zi', '/Od'])
 
 # This command generates the header with git revision information
+# NOTE: Changes made here must also be made in pkg/gitrev.sh!
 def gen_gitrev(env, target, source):
 	revid = subprocess.check_output(["git", "rev-parse", "HEAD"], text=True);
 	fulltag = subprocess.check_output(["git", "tag", "--sort=v:refname"], text=True).split('\n')[-1]

pkg/gitrev.sh

@@ -1,6 +1,8 @@
 #!/bin/bash
 # Usage: gitrev.sh path-to-src
 
+# This script generates the header with git revision information
+# NOTE: Changes made here must also be made in SConstruct!
 REVID=`git rev-parse HEAD`;
 export FULLTAG=`git tag --sort=v:refname | tail -n1`;
 TAGREV=`git rev-parse $FULLTAG`;