* tools/buildbot/slaves/svn-x64-macosx/mkramdisk.sh:    Make the RAM disk much smaller, current tests don't use more    than 20% of the previoius size.
* tools/buildbot/slaves/svn-x64-macosx/mkramdisk.sh:
   Make the RAM disk much smaller, current tests don't use more
   than 20% of the previoius size.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1639640 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion