DocToText 5.0.2 windows 64 and OSX only

Additions:

• Add Mac Support

Fixes:

• Mac crash in vendored mimetic from dot operator on pointer - repackaged as 0.9.7-fixed and included .bz2 and .sha1 in the repo
• Mac iwork_parser.h class vs struct crash when used as interface for vendored library
• Mac pdf_parser.cpp abs -> std::abs and use cmath header over math.h or else we get abiguous resulotions of abs with different integral and floating point types
• Mac tests should force DYLD_LIBRARY_PATH to the build folder or else we don't know we're testing what the end user will have

Changes:

• Remove support for 32bit on Mac
• Remove debug downloads from SILVERCODERS (3rdparty/Makefile ARCH_D - these links are mostly broken
• The distributed dylibs are now relocatable by rpath entry
• Drop support for MACOSX_STATIC Makefile flag - with or without it the SILVERCODERS distribution was building partial static/shared linking. Now we just static link everything we can barring libSystem, libiconv, and CoreServices (which should be widely available on a stable interface on any modern Mac).

DocToText 5.0.1 windows 64 only prerelease

Fixes:

• fix a memory leak in OLE parsing

DocToText 5.0.0 windows 64 only prerelease

Merge pull request #1 from lithiumFlower/compile-win64

compile and test on windows 10 under mingw64