[dmlc] Add new port (#7549)

* [dmlc-core] Add new port

* rebuild

* Fix error building dynamic crt linkage

* Fix error building dynamic crt linkage

* Fix error building dynamic crt linkage

* Add openmp as feature

* Rename this port as dmlc

* remove dmlc core files

ports/dmlc/CONTROL

@@ -0,0 +1,8 @@
+Source: dmlc
+Version: 2019-08-12
+Homepage: https://github.com/dmlc/dmlc-core
+Description: DMLC-Core is the backbone library to support all DMLC projects, offers the bricks to build efficient and scalable distributed machine learning libraries.
+Default-Features: openmp
+
+Feature: openmp
+Description: Build with openmp

ports/dmlc/portfile.cmake

@@ -0,0 +1,43 @@
+include(vcpkg_common_functions)
+
+vcpkg_check_linkage(ONLY_STATIC_LIBRARY)
+
+if(VCPKG_CMAKE_SYSTEM_NAME STREQUAL "WindowsStore")
+    message(FATAL_ERROR "${PORT} currently doesn't supports UWP.")
+endif()
+
+vcpkg_from_github(
+    OUT_SOURCE_PATH SOURCE_PATH
+    REPO dmlc/dmlc-core
+    REF d3fd7c5e9b9c280d3081ada3fb62705547c00bf1
+    SHA512 6887d52ddd00949866c27bea3c860abb8a7ecf61feeac79d67d260635e9c3e490b6f0538cbc0ccc1f03e90ab4094bfc0fcb938adb3fb5afe9fea813d47cc7430
+    HEAD_REF master
+)
+
+vcpkg_check_features(OUT_FEATURE_OPTIONS FEATURE_OPTIONS
+    openmp    ENABLE_OPENMP
+)
+
+if(VCPKG_CRT_LINKAGE STREQUAL dynamic)
+   set(DMLC_FORCE_SHARED_CRT ON)
+else()
+   set(DMLC_FORCE_SHARED_CRT OFF)
+endif()
+
+vcpkg_configure_cmake(
+    SOURCE_PATH ${SOURCE_PATH}
+    PREFER_NINJA
+    OPTIONS 
+       -DDMLC_FORCE_SHARED_CRT=${DMLC_FORCE_SHARED_CRT}   
+       -DUSE_OPENMP=${ENABLE_OPENMP}       
+)
+
+vcpkg_install_cmake()
+
+file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/debug/include)
+
+vcpkg_fixup_cmake_targets(CONFIG_PATH lib/cmake/dmlc)
+
+# Handle copyright
+file(COPY ${SOURCE_PATH}/LICENSE DESTINATION ${CURRENT_PACKAGES_DIR}/share/${PORT})
+file(RENAME ${CURRENT_PACKAGES_DIR}/share/${PORT}/LICENSE ${CURRENT_PACKAGES_DIR}/share/${PORT}/copyright)