creating branch to fix intrusive for Sun CC (#3339)

svn path=/sandbox-branches/intrusive_fix_SunCC/boost/intrusive/; revision=55764
fixed SFINAE usage for Sun CC

svn path=/sandbox-branches/intrusive_fix_SunCC/boost/intrusive/; revision=55765
removed explicit from smart_ptr ctor

svn path=/sandbox-branches/intrusive_fix_SunCC/libs/intrusive/; revision=55775