update the boost version

[smanders]

externpro currently build version 1.63.0

• version 1.64.0 was released 2017.04.19
• version 1.65.0 was released 2017.08.21
• version 1.65.1 was released 2017.09.07
• version 1.66.0 was released 2017.12.18
• version 1.67.0 was released 2018.04.14
• according to the development calendar version 1.68.0 should be released 2018.08.08

boost version history https://www.boost.org/users/history/

[smanders]

https://studiofreya.com/2017/04/23/building-boost-1-64-with-visual-studio-2017/

[smanders]

boost interprocess bug https://isrhub.usurf.usu.edu/swoolsey/VantageServer/pull/266#issue-22704

#define BOOST_INTERPROCESS_BOOTSTAMP_IS_SESSION_MANAGER_BASED

This is the recommended fix specified in the boost issue tracking for the shared memory issue on windows. This fix enables code in boost::interprocess that don't use the event log to determine system uptime, however it makes the code incompatible with anything older than windows 7 and windows server 2008 according to the documentation of the fix.

For more information, see the following boost tickets: https://svn.boost.org/trac10/ticket/9767 https://svn.boost.org/trac10/ticket/11480 https://svn.boost.org/trac10/ticket/12137 https://svn.boost.org/trac10/ticket/12315

[smanders]

added comments for boost patch justification

• boost gil numeric extension https://github.com/smanders/gil/pull/1#issuecomment-407932987
• boost gil mods https://github.com/smanders/gil/pull/2#issuecomment-407933281
• boost mpl mods https://github.com/smanders/mpl/pull/1#issuecomment-407924710
• boost units mods https://github.com/smanders/units/pull/1#issuecomment-407923870

[smanders]

completed with commits to dev branch referenced above