Fix regex so that --unix-lines option actual works!

svn path=/branches/RC_1_33_0/boost/tools/bcp/; revision=31544
Fix regexes used and scanning used to search CVS/Entries.Log files as well as CVS/Entries files (the latter don't always get immediately updated).

svn path=/branches/RC_1_33_0/boost/tools/bcp/; revision=31546