[tlbuild] tl-update-bindir deletes biber.exe

[Ken Brown]

The following patch prevents tl-update-bindir from deleting biber.exe. 
(This bit me on i386-cygwin.)  OK to apply?

Index: Master/tlpkg/bin/tl-update-bindir
===================================================================
--- Master/tlpkg/bin/tl-update-bindir   (revision 36811)
+++ Master/tlpkg/bin/tl-update-bindir   (working copy)
@@ -246,7 +246,7 @@
      # looking for deletions, but don't delete (x)asy, biber, or xindy.
    comm -23 $tmpdir/now $tmpdir/new \
    | egrep -v '^(x?asy(\.exe)?|freeglut\.dll)$' \
-  | egrep -v '^biber$' \
+  | egrep -v '^biber(\.exe)?$' \
    | egrep -v 'xindy' \
    >$ourdel  # intentionally anything matching xindy
    comm -13 $tmpdir/now $tmpdir/new >$ouradd  # looking for additions


Ken