build-infra: Large compare diffs between new and old on mac

We have regressed in comparisons between new and old on mac. Here is the output of compre.sh:

J2SDK Directory structure...Identical!
J2RE Directory structure...Identical!
J2SDK File names...Identical!
J2RE File names...Identical!
J2SDK Permissions...Identical!
J2RE Permissions...Identical!
J2SDK File types...Identical!
J2RE File types...Identical!
J2SDK General files...
J2RE General files...
Zip files...
Jar files...
Libraries...
 Binary : Size : Symbols : Deps : Fulldump : Disass :
* diff *:*156% 34352*:* diff *:* diff *:* 205918*:* 659768*: ./jre/lib/jli/libjli.dylib
  diff : 100% 16 : diff : : 43684 : 87626 : ./jre/lib/libJObjC.dylib
* diff *:*126% 34352*:* diff *:* diff *:* 342605*:* 1474001*: ./jre/lib/libinstrument.dylib
* diff *:*121% 24576*: : :* 577556*:* 4726*: ./jre/lib/libosxapp.dylib
* diff *:*126% 83336*:* diff *:* diff *:* 993953*:* 4424561*: ./jre/lib/libsplashscreen.dylib
* diff *:*315% 78712*:* diff *:* diff *:* 301019*:* 730849*: ./jre/lib/libzip.dylib
Executables...
 Binary : Size : Symbols : Deps : Fulldump : Disass :
( diff ):*143% 38480*:* diff *:* diff *:* 341509*:* 1061548*: ./bin/appletviewer
( diff ):*143% 38480*:* diff *:* diff *:* 341503*:* 1061508*: ./bin/extcheck
( diff ):*143% 38480*:* diff *:* diff *:* 341509*:* 1061548*: ./bin/idlj
( diff ):*143% 38480*:* diff *:* diff *:* 341509*:* 1061548*: ./bin/jar
( diff ):*143% 38480*:* diff *:* diff *:* 341503*:* 1061508*: ./bin/jarsigner
( diff ):*143% 38464*:* diff *:* diff *:* 341088*:* 1061156*: ./bin/java
( diff ):*143% 38480*:* diff *:* diff *:* 341503*:* 1061508*: ./bin/javac
( diff ):*143% 38480*:* diff *:* diff *:* 341503*:* 1061508*: ./bin/javadoc
( diff ):*143% 38480*:* diff *:* diff *:* 341503*:* 1061508*: ./bin/javah
( diff ):*143% 38480*:* diff *:* diff *:* 341503*:* 1061508*: ./bin/javap
( diff ):*143% 38480*:* diff *:* diff *:* 341503*:* 1061508*: ./bin/jcmd
( diff ):*143% 38472*:* diff *:* diff *:* 341727*:* 1061508*: ./bin/jconsole
( diff ):*143% 38480*:* diff *:* diff *:* 341591*:* 1061508*: ./bin/jdb
( diff ):*143% 38480*:* diff *:* diff *:* 341503*:* 1061508*: ./bin/jhat
( diff ):*143% 38480*:* diff *:* diff *:* 341733*:* 1061548*: ./bin/jinfo
( diff ):*143% 38480*:* diff *:* diff *:* 341733*:* 1061548*: ./bin/jmap
( diff ):*143% 38480*:* diff *:* diff *:* 341509*:* 1061548*: ./bin/jps
( diff ):*143% 38480*:* diff *:* diff *:* 341509*:* 1061548*: ./bin/jrunscript
( diff ):*143% 38480*:* diff *:* diff *:* 341597*:* 1061548*: ./bin/jsadebugd
( diff ):*143% 38480*:* diff *:* diff *:* 341727*:* 1061508*: ./bin/jstack
( diff ):*143% 38480*:* diff *:* diff *:* 341503*:* 1061508*: ./bin/jstat
( diff ):*143% 38480*:* diff *:* diff *:* 341503*:* 1061508*: ./bin/jstatd
( diff ):*143% 38480*:* diff *:* diff *:* 341503*:* 1061508*: ./bin/keytool
( diff ):*143% 38480*:* diff *:* diff *:* 341503*:* 1061508*: ./bin/native2ascii
( diff ):*143% 38472*:* diff *:* diff *:* 341775*:* 1061508*: ./bin/orbd
( diff ):*143% 38472*:* diff *:* diff *:* 341639*:* 1061508*: ./bin/pack200
( diff ):*143% 38480*:* diff *:* diff *:* 341503*:* 1061508*: ./bin/policytool
( diff ):*143% 38480*:* diff *:* diff *:* 341509*:* 1061548*: ./bin/rmic
( diff ):*143% 38480*:* diff *:* diff *:* 341503*:* 1061508*: ./bin/rmid
( diff ):*143% 38480*:* diff *:* diff *:* 341503*:* 1061508*: ./bin/rmiregistry
( diff ):*143% 38480*:* diff *:* diff *:* 341503*:* 1061508*: ./bin/schemagen
( diff ):*143% 38480*:* diff *:* diff *:* 341503*:* 1061508*: ./bin/serialver
( diff ):*143% 38480*:* diff *:* diff *:* 341503*:* 1061508*: ./bin/servertool
( diff ):*143% 38472*:* diff *:* diff *:* 341775*:* 1061508*: ./bin/tnameserv
* diff *:*167% 68984*:* diff *:* diff *:* 355819*:* 1462573*: ./bin/unpack200
( diff ):*143% 38480*:* diff *:* diff *:* 341509*:* 1061548*: ./bin/wsgen
( diff ):*143% 38480*:* diff *:* diff *:* 341509*:* 1061548*: ./bin/wsimport
( diff ):*143% 38480*:* diff *:* diff *:* 341509*:* 1061548*: ./bin/xjc
( diff ):*143% 38464*:* diff *:* diff *:* 341088*:* 1061156*: ./jre/bin/java
( diff ):*143% 38480*:* diff *:* diff *:* 341503*:* 1061508*: ./jre/bin/keytool
( diff ):*143% 38472*:* diff *:* diff *:* 341775*:* 1061508*: ./jre/bin/orbd
( diff ):*143% 38472*:* diff *:* diff *:* 341639*:* 1061508*: ./jre/bin/pack200
( diff ):*143% 38480*:* diff *:* diff *:* 341503*:* 1061508*: ./jre/bin/policytool
( diff ):*143% 38480*:* diff *:* diff *:* 341503*:* 1061508*: ./jre/bin/rmid
( diff ):*143% 38480*:* diff *:* diff *:* 341503*:* 1061508*: ./jre/bin/rmiregistry
( diff ):*143% 38480*:* diff *:* diff *:* 341503*:* 1061508*: ./jre/bin/servertool
( diff ):*143% 38472*:* diff *:* diff *:* 341775*:* 1061508*: ./jre/bin/tnameserv
* diff *:*167% 68984*:* diff *:* diff *:* 355819*:* 1462573*: ./jre/bin/unpack200