(svn_pack_bytestring): Don't reallocate, just assemble the string by hand, copying the data pointer.
(svn_pack_bytestring): Don't reallocate, just assemble the string by
hand, copying the data pointer.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion