v2.0.2-rc (#27)

## v2.0.2-rc

### BREAKING CHANGES

* Refactored `config.json` - will need to verify configuration settings prior to mounting

### Issues

* \#12 \[Unit Test\] Complete all providers unit tests
* \#14 \[Unit Test\] SQLite mini-ORM unit tests and cleanup
* \#16 Add support for bucket name in Sia provider
* \#17 Update to common c++ build system
  * A single 64-bit Linux Jenkins server is used to build all Linux and Windows versions
  * All dependency sources are now included
  * MSVC is no longer supported
  * MSYS2 is required for building Windows binaries on Windows
  * OS X support is temporarily disabled
* \#19 \[bug\] Rename file is broken for files that are existing
* \#23 \[bug\] Incorrect file size displayed while upload is pending
* \#24 RocksDB implementations should be transactional
* \#25 Writes should block when maximum cache size is reached
* \#26 Complete ring buffer and direct download support

### Changes from v2.0.1-rc

* Ability to choose between RocksDB and SQLite databases
* Added direct reads and implemented download fallback
* Corrected file times on S3 and Sia providers
* Corrected handling of `chown()` and `chmod()`
* Fixed erroneous download of chunks after resize

Reviewed-on: #27

cmake/libraries/libsodium.cmake

@@ -0,0 +1,48 @@
+if(PROJECT_ENABLE_LIBSODIUM)
+  if(PROJECT_BUILD)
+    pkg_check_modules(SODIUM libsodium>=${LIBSODIUM_VERSION} REQUIRED)
+
+    add_definitions(-DPROJECT_ENABLE_LIBSODIUM)
+
+    include_directories(BEFORE SYSTEM ${SODIUM_INCLUDE_DIRS})
+
+    if(PROJECT_IS_MINGW_UNIX)
+      if(PROJECT_STATIC_LINK)
+        link_libraries(/mingw64/lib/libsodium.a)
+      else()
+        link_libraries(/mingw64/lib/libsodium.dll.a)
+      endif()
+    else()
+      link_libraries(${SODIUM_LIBRARIES})
+    endif()
+  elseif(NOT PROJECT_IS_MINGW)
+    if(PROJECT_IS_MINGW)
+      set(LIBSODIUM_TYPE mingw64)
+    else()
+      set(LIBSODIUM_TYPE linux)
+    endif()
+
+    if(PROJECT_BUILD_SHARED_LIBS)
+      set(LIBSODIUM_ENABLE_SHARED yes)
+    else()
+      set(LIBSODIUM_ENABLE_SHARED no)
+    endif()
+
+    ExternalProject_Add(libsodium_project
+      PREFIX external
+      URL ${PROJECT_3RD_PARTY_DIR}/libsodium-${LIBSODIUM_VERSION}.tar.gz
+      URL_HASH SHA256=${LIBSODIUM_HASH}
+      BUILD_IN_SOURCE 1
+      LIST_SEPARATOR |
+      CONFIGURE_COMMAND ${PROJECT_3RD_PARTY_DIR}/libsodium_configure.sh 
+        ${LIBSODIUM_TYPE}
+        ${PROJECT_MARCH}
+        ${PROJECT_EXTERNAL_BUILD_ROOT}
+        ${LIBSODIUM_ENABLE_SHARED}
+      BUILD_COMMAND make -j1
+      INSTALL_COMMAND make install
+    )
+
+    list(APPEND PROJECT_DEPENDENCIES libsodium_project)
+  endif()
+endif()