[librealsense2] new port

ports/librealsense2/CONTROL

@@ -0,0 +1,3 @@
+Source: librealsense2
+Version: 2.8.1
+Description: Intel® RealSense™ SDK 2.0 is a cross-platform library for Intel® RealSense™ depth cameras (D400 series and the SR300).

ports/librealsense2/crt-linkage-restriction.patch

@@ -0,0 +1,19 @@
+--- a/CMakeLists.txt	2017-11-07 14:30:02.270145100 +0800
++++ b/CMakeLists.txt	2017-11-07 14:26:42.306208800 +0800
+@@ -402,16 +402,6 @@
+     source_group("Header Files\\Processing Blocks" FILES
+         src/colorizer.h
+         )
+-
+-    foreach(flag_var
+-            CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
+-            CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO
+-            CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
+-            CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO)
+-        if(${flag_var} MATCHES "/MD")
+-            string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
+-        endif(${flag_var} MATCHES "/MD")
+-    endforeach(flag_var)
+ else()
+ 
+ endif()

ports/librealsense2/portfile.cmake

@@ -0,0 +1,47 @@
+include(vcpkg_common_functions)
+
+vcpkg_from_github(
+    OUT_SOURCE_PATH SOURCE_PATH
+    REPO IntelRealSense/librealsense
+    REF v2.8.1
+    SHA512 af6ae166ef0879d4da434cebea95358a4c3907bd71913577008a21717a9e45400a6eafffe5ddbf9cc50bd939d4dae0863e2f34b7ee76de276fedc68117a21e71
+    HEAD_REF master
+)
+
+vcpkg_apply_patches(
+    SOURCE_PATH ${SOURCE_PATH}
+    PATCHES
+        ${CMAKE_CURRENT_LIST_DIR}/crt-linkage-restriction.patch
+)
+
+if(${VCPKG_LIBRARY_LINKAGE} STREQUAL static)
+    set(BUILD_SHARED off)
+else()
+    set(BUILD_SHARED on)
+endif()
+
+vcpkg_configure_cmake(
+    SOURCE_PATH ${SOURCE_PATH}
+    OPTIONS
+        -DENFORCE_METADATA=on
+        -DBUILD_EXAMPLES=off
+        -DBUILD_GRAPHICAL_EXAMPLES=off
+        -DBUILD_PYTHON_BINDINGS=off
+        -DBUILD_UNIT_TESTS=off
+        -DBUILD_WITH_OPENMP=off
+        -DBUILD_SHARED_LIBS=${BUILD_SHARED}
+    OPTIONS_DEBUG
+        "-DCMAKE_PDB_OUTPUT_DIRECTORY=${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-dbg"
+)
+
+vcpkg_install_cmake()
+
+vcpkg_fixup_cmake_targets(CONFIG_PATH lib/cmake/realsense2)
+
+file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/debug/include)
+# Handle copyright
+file(COPY ${SOURCE_PATH}/COPYING DESTINATION ${CURRENT_PACKAGES_DIR}/share/librealsense2)
+file(RENAME ${CURRENT_PACKAGES_DIR}/share/librealsense2/COPYING ${CURRENT_PACKAGES_DIR}/share/librealsense2/copyright)
+
+vcpkg_copy_pdbs()
+