Merged boost::algorithm::gather and updated tests for Utility, Algorithm and Utility libraries

svn path=/branches/release/boost/algorithm/; revision=83154
Clean up merge failure

svn path=/branches/release/libs/algorithm/; revision=83170
more merge failures

svn path=/branches/release/libs/algorithm/; revision=83171
One more failed merge

svn path=/branches/release/boost/algorithm/; revision=83192
Merge bug fix to release; Fixes #7989

svn path=/branches/release/boost/algorithm/; revision=83193
Merge Algorithm changes to release; hex code cleanups; gather iterator requirements; copy_while and copy_until interface changes

svn path=/branches/release/boost/algorithm/; revision=83347
merge [82960] to release, fixes #7663

svn path=/branches/release/boost/algorithm/; revision=83381