* Change __BORLANDC__ to BOOST_BORLANDC, which is defined in Boost config for the Embarcadero non-clang-based compilers.
* Restored a Borland check.
* Specify std:: for all standard identifiers and remove 'using namespace std:'.
* Removed std:: from C header abort call.
* Moved 'using namespace std;' after header file inclusions
An unintrusive implementation - no existing interfaces changed, and a single addition for obtaining all of the different long names.
Notes:
* Tests added for the new functionality, and existing tests expanded to take it into account.
* It is now impossible to specify long names with commas in them (but then, that wasn't properly supported before either, more of an oversight).
* The multiple long options are not included in the usage information - just the first one of them is printed
function was zero, it was interpreted as no style is suppored. Previously,
it was interpreted as default_styles. Also, remove 'style' argument from
'cmdline' constructors.
[SVN r28500]
as opposed to having his own data structures. Clean up option description
classes a bit, removing unneeded methods. Remove support for 'implicit'
options.
[SVN r28413]
