(svn_wc__file_modified_p): move apr_stat calls into filesizes_equal_p.  Also only call this routine if textbase exists. :)
(svn_wc__file_modified_p): move apr_stat calls into
filesizes_equal_p.  Also only call this routine if textbase exists. :)

(filesizes_equal_p): change this routine's arguments appropriately,
given that it stats internally now.

(timestamps_equal_p): change interface, it only needs one filename and
needs a pool.  Actually implement this routine using Karl's time API.

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