STLplus C++ library collection SVN stlplus3

Removed criticism of other libraries - not fair and anyway out of date

Added MSWINDOWS macro

Modified error function for WIN32 to remove trailing newline on error messages

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First version of a class for managing dynamic-link libraries which provides a
platform-independent interface

Changed dependencies of strings and persistence libraries

Added documentation of platform directives

Standardised on ifdef for compiler/platform switches to make them easy to
search for

Containers library no longer has a lib file when linking

merged .cpp file into header to remove any requirement to compile this library