Update librealsense v2.8.3

Update librealsense v2.8.3.

ports/realsense2/CONTROL

@@ -1,3 +1,3 @@
 Source: realsense2
-Version: 2.8.2
+Version: 2.8.3
 Description: Intel® RealSense™ SDK 2.0 is a cross-platform library for Intel® RealSense™ depth cameras (D400 series and the SR300).

ports/realsense2/crt-linkage-restriction.patch

@@ -1,8 +1,10 @@
---- 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
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index a59e2513..3b08f490 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -420,16 +420,6 @@ if(WIN32)
+         src/proc/temporal-filter.h
+         src/proc/syncer-processing-block.h
          )
 -
 -    foreach(flag_var

ports/realsense2/portfile.cmake

@@ -3,8 +3,8 @@ include(vcpkg_common_functions)
 vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO IntelRealSense/librealsense
-    REF v2.8.2
-    SHA512 a2622ff241e939fad74f6d0224b5f9b505e971935bb8f27dc10159a5853bc5d55870c312c0f43014c8c7ec5a1c824e659ee9ee9a574b2d7c9b8e484c1a4918a1
+    REF v2.8.3
+    SHA512 9be27109da0247cf6669f01b3f0f945073f7851897da553915716d979c50f6228e771ca5a63955707f618d0db1fc58ba52f78dece6d904b6671dee56ba70d48f
     HEAD_REF master
 )
 
@@ -19,12 +19,12 @@ string(COMPARE EQUAL "${VCPKG_LIBRARY_LINKAGE}" "dynamic" BUILD_SHARED)
 vcpkg_configure_cmake(
     SOURCE_PATH ${SOURCE_PATH}
     OPTIONS
-        -DENFORCE_METADATA=on
-        -DBUILD_EXAMPLES=off
-        -DBUILD_GRAPHICAL_EXAMPLES=off
-        -DBUILD_PYTHON_BINDINGS=off
-        -DBUILD_UNIT_TESTS=off
-        -DBUILD_WITH_OPENMP=off  # keep OpenMP off until librealsense issue #744 is patched
+        -DENFORCE_METADATA=ON
+        -DBUILD_EXAMPLES=OFF
+        -DBUILD_GRAPHICAL_EXAMPLES=OFF
+        -DBUILD_PYTHON_BINDINGS=OFF
+        -DBUILD_UNIT_TESTS=OFF
+        -DBUILD_WITH_OPENMP=OFF  # keep OpenMP off until librealsense issue #744 is patched
         -DBUILD_SHARED_LIBS=${BUILD_SHARED}
     OPTIONS_DEBUG
         "-DCMAKE_PDB_OUTPUT_DIRECTORY=${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-dbg"