(minor) bash -> sh changes in some non-core code

/bin/bash is muscle memory for me, although it appears that not too much
of the actual code is bash-specific, so it's reasonably easy to fix.

src/VREF/COUNT

@@ -1,5 +1,4 @@
-#!/bin/bash
-# TODO: convert to perl!
+#!/bin/sh
 
 # gitolite VREF to count number of changed/new files in a push
 
@@ -34,7 +33,7 @@ nf=
 # $oldsha when you update an old feature branch from master and then push it
 count=`git log --name-only $nf --format=%n $newtree --not --all | grep . | sort -u | perl -ne '}{print "$."'`
 
-[[ $count -gt $max ]] && {
+[ $count -gt $max ] && {
     # count has been exceeded.  If $9 was NO_SIGNOFF there's still a chance
     # for redemption -- if the top commit has a proper signed-off by line
     [ "$9" = "NO_SIGNOFF" ] && {

src/VREF/FILETYPE

@@ -1,5 +1,4 @@
-#!/bin/bash
-# TODO: convert to perl!
+#!/bin/sh
 
 # gitolite VREF to find autogenerated files
 

src/VREF/VOTES

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 # gitolite VREF to count votes before allowing pushes to certain branches.
 

src/triggers/post-compile/update-description-file

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 # For normal (not "wild") repos, gitolite v3 sets 'gitweb.description' instead
 # of putting the text in the "description" file.  This is easier because it

src/triggers/upstream

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 # manage local, gitolite-controlled, copies of read-only upstream repos.