Modified code to make it compileable with MinGw64
Enabled compilation with MinGw 64
Made assembly of library names in source code (prefix, name, postfix, extension, version) configurable with CMake
Modified CMakeLists.txt to smoothen compilation with MinGW-w64
Added small textfile on how to build OCE with MinGW-w64
Reinserted correct definition of OCE_DEFAULT_CSF_GraphicShr
Fixed CMake warnings
Corrected debug library postfix typo
Corrected assembly of OCE_DEFAULT_CSF_GraphicShr variable for MSVC
Enabled setting of CMAKE_ARCHIVE_OUTPUT_DIRECTORY variable also for MSVC
Merge pull request #440 from tpaviot/review/mingw64-port

Review/mingw64-port