Fix version verification when "\|" doesn't work in sed.

Author: WayneD

mkgitver

@@ -7,8 +7,10 @@ if [ ! -f git-version.h ]; then
 fi
 
 if test -d "$srcdir/.git" || test -f "$srcdir/.git"; then
-    gitver=`git describe --abbrev=8 2>/dev/null | sed -n '/^v3\.[0-9][0-9]*\.[0-9][0-9]*\(pre[0-9]*\)*\(-\|$\)/p'`
-    if [ -n "$gitver" ]; then
+    gitver=`git describe --abbrev=8 2>/dev/null`
+    # NOTE: I'm avoiding "|" in sed since I'm not sure if sed -r is portable and "\|" fails on some OSes.
+    verchk=`echo "$gitver-" | sed -n '/^v3\.[0-9][0-9]*\.[0-9][0-9]*\(pre[0-9]*\)*-/p'`
+    if [ -n "$verchk" ]; then
 	echo "#define RSYNC_GITVER \"$gitver\"" >git-version.h.new
 	if ! diff git-version.h.new git-version.h >/dev/null; then
 	    echo "Updating git-version.h"