Bumped version number to 2.53

svn path=/trunk/boost/spirit/; revision=77512
test upstream merge

svn path=/trunk/boost/spirit/; revision=77710
Test downstream merge

svn path=/trunk/boost/spirit/; revision=77711
fix assign_to_attribute_from_iterators where Attribute is a container of iterator_range

svn path=/trunk/boost/spirit/; revision=77713
fix for identifier rule not allowing identifiers that start with a keyword (e.g. fortify)

svn path=/trunk/libs/spirit/; revision=77966
Solving the darn endian problem in Spirit once and for all. I should have done this a long time ago.

svn path=/trunk/boost/spirit/; revision=78156
patches from teejay

svn path=/trunk/boost/spirit/; revision=78313
patches from teejay

svn path=/trunk/libs/spirit/; revision=78314
Changed '*' to '+', as per lex example in the comment.

svn path=/trunk/libs/spirit/; revision=78351
Changed '*' to '+', as per lex example in the comment.

svn path=/trunk/libs/spirit/; revision=78352
lexertl supports " like flex.

svn path=/trunk/libs/spirit/; revision=78353
lexertl supports " like flex.

svn path=/trunk/libs/spirit/; revision=78354
whitespace should be + not *.

svn path=/trunk/libs/spirit/; revision=78355
Whitespace should be + not *.

svn path=/trunk/libs/spirit/; revision=78356
Whitespace should be + not *.

svn path=/trunk/libs/spirit/; revision=78357
Whitespace should be + not *.

svn path=/trunk/libs/spirit/; revision=78358
Big fix allowing "script" greater that 63

svn path=/trunk/boost/spirit/; revision=78524
Missing `endsect` in spirit docs.

svn path=/trunk/libs/spirit/; revision=78732
Fixed wrong link

svn path=/trunk/libs/spirit/; revision=78905
Update classic spirit tests which use boost::TIME_UTC (now TIME_UTC_).

svn path=/trunk/libs/spirit/; revision=79653