Resolve #774 ([PATCH] avoid early exit when acting on somenon-versioned files). Thanks to Karl Fogel for review andsuggestions.* subversion/clients/cmdline/main.c: (svn_cl__cmd_table): Add -q option to proplist.* subversion/clients/cmdline/proplist-cmd.c: (svn_cl__proplist): Instead of using SVN_ERR, just store the err and check to see if it is SVN_ERR_ENTRY_NOT_FOUND. If it is, ignore the error and stop processing this file, printing a warning if the -q option was not used. For all other errors return the err object and let normal error processing occur.* subversion/clients/cmdline/revert-cmd.c: (svn_cl__revert): Same change (but see svn_client_revert change below).* subversion/clients/cmdline/update-cmd.c: (svn_cl__update): Same change.* subversion/include/svn_client.h: (svn_client_update): (svn_client_revert): (svn_client_proplist): Note that these can return SVN_ERR_ENTRY_NOT_FOUND.* subversion/include/svn_wc.h: (svn_wc_is_wc_root): Note that it can return SVN_ERR_ENTRY_NOT_FOUND.* subversion/libsvn_client/revert.c: (svn_client_revert): Only use SVN_ERR on the svn_wc_adm_probe_open and svn_wc_adm_close calls; for all svn function calls in between (i.e. all svn functions called while the wc is locked), save the return value and if it is an error jump to the cleanup section at the end (where the wc is closed).