Remove externals for Predef library.. Now using a custom script to hard-link across from git to svn.

git-svn-id: http://svn.boost.org/svn/boost/trunk@85179 b8fc166d-592f-0410-95f2-cb63ce0dd405
Fixes #8842.

git-svn-id: http://svn.boost.org/svn/boost/trunk@85180 b8fc166d-592f-0410-95f2-cb63ce0dd405
Fixes #8765.

git-svn-id: http://svn.boost.org/svn/boost/trunk@85181 b8fc166d-592f-0410-95f2-cb63ce0dd405
FixesFixes #8764.

git-svn-id: http://svn.boost.org/svn/boost/trunk@85182 b8fc166d-592f-0410-95f2-cb63ce0dd405
Apply Bjorn Roald's patch for generating header links in git.

git-svn-id: http://svn.boost.org/svn/boost/trunk@85183 b8fc166d-592f-0410-95f2-cb63ce0dd405
Add support for integer square roots.

git-svn-id: http://svn.boost.org/svn/boost/trunk@85184 b8fc166d-592f-0410-95f2-cb63ce0dd405
Disabled warning suppression pragmas for Intel compiler since it doesn't support them.

git-svn-id: http://svn.boost.org/svn/boost/trunk@85185 b8fc166d-592f-0410-95f2-cb63ce0dd405
Added a missing include.

git-svn-id: http://svn.boost.org/svn/boost/trunk@85186 b8fc166d-592f-0410-95f2-cb63ce0dd405
Attempt to work around Intel Compiler on Linux problem: error #453: protected function "noncopyable::noncopyable()" is not accessible.

git-svn-id: http://svn.boost.org/svn/boost/trunk@85187 b8fc166d-592f-0410-95f2-cb63ce0dd405