Update usr guide, releae note, README and FAQ

Changed dependent software versions:
Ubuntu 18.04 -> Ubuntu 20.04
OpenVINO 21.1 -> OpenVINO 21.4

On TGL, the recommanded Linux kernel version is
changed from Intel lts 5.4.102 to Intel lts 5.10.41

Signed-off-by: dwang26 <elaine.wang@intel.com>

Author: dwang26

README.md

@@ -38,7 +38,7 @@ See [user guide](./doc/concurrent_video_analytic_sample_application_user_guide_2
 # System requirements
 
 **Operating System:**
-* Ubuntu 18.04.05
+* Ubuntu 18.04.02
 
 **Software:**
 * [MediaSDK 21.1.3](https://github.com/Intel-Media-SDK/MediaSDK/releases/tag/intel-mediasdk-21.1.3)
@@ -53,7 +53,7 @@ See [user guide](./doc/concurrent_video_analytic_sample_application_user_guide_2
 
 Run build_and_install.sh to install dependent software packages and build sample application video_e2e_sample. 
 
-Please refer to ”Installation Guide“ in [user guide](./doc/concurrent_video_analytic_sample_application_user_guide.pdf) for details.
+Please refer to ”Installation Guide“ in [user guide](./doc/concurrent_video_analytic_sample_application_user_guide_2021.1.0.pdf) for details.
 
 ## Build steps
 

doc/FAQ.md

@@ -1,7 +1,7 @@
 # Frequently asked questions (SVET sample application)
 
 ## Where can I find the descritpion of options used in par file?
-See chapter 2.4 in doc/svet_sample_application_user_guide_2021.1.0.pdf
+See chapter 2.4 in doc/concurrent_video_analytic_sample_application_user_guide.pdf
 Running the SVET sample applicton with option "-?" can show the usage of options.
 
 ## Why does the system need to be switched to text console mode before running the sample application

doc/concurrent_video_analytic_sample_application_release_notes.pdf

@@ -11,13 +11,14 @@ set(OPENCV_LIB $ENV{INTEL_CVSDK_DIR}/opencv/lib)
 set(DL_SDK_INCLUDE $ENV{INTEL_CVSDK_DIR}/deployment_tools/inference_engine/include)
 set(DL_SDK_LIB $ENV{INTEL_CVSDK_DIR}/deployment_tools/inference_engine/lib/intel64/)
 set(DL_SAMPLE_INCLUDE $ENV{INTEL_OPENVINO_DIR}/inference_engine/samples/cpp/common/)
+set(DL_SAMPLE_INCLUDE_V214 $ENV{INTEL_OPENVINO_DIR}/deployment_tools/inference_engine/samples/cpp/common/utils/include/)
 set(NGRAPH_INCLUDE $ENV{INTEL_OPENVINO_DIR}/deployment_tools/ngraph/include/)
 set(NGRAPH_LIB $ENV{INTEL_OPENVINO_DIR}/deployment_tools/ngraph/lib/)
 
 set(MFX_INCLUDE $ENV{MFX_HOME}/include)
 set(MFX_LIB_OPENSOURCE $ENV{MFX_HOME}/lib)
 set(MFX_LIB $ENV{MFX_HOME}/lib/lin_x64)
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -m64 -msse4.2  -pipe -fPIC -Wall -Wformat -Wformat-security -Wnon-virtual-dtor -Wno-deprecated-declarations -Wno-unknown-pragmas -Wno-unused  -DUNIX -D__USE_LARGEFILE64 -D_FILE_OFFSET_BITS=64 -DLINUX -DLINUX32 -DLINUX64 -DMFX_API_VERSION=\"1.34\" -DMFX_GIT_COMMIT=\"34c7cbbb\" -DENABLE_INFERENCE -DMEDIA_VERSION_STR=\"20.3.0\" -g -O3 -std=c++11 -funroll-loops -ftree-vectorize -I${DL_SAMPLE_INCLUDE} -I${NGRAPH_INCLUDE} -I${MFX_INCLUDE} -I${DL_SDK_INCLUDE} -I${DL_SDK_INCLUDE}/cpp -I${OPENCV_INCLUDE} -DLIBVA_SUPPORT -DLIBVA_DRM_SUPPORT -DLIBVA_X11_SUPPORT")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -m64 -msse4.2  -pipe -fPIC -Wall -Wformat -Wformat-security -Wnon-virtual-dtor -Wno-deprecated-declarations -Wno-unknown-pragmas -Wno-unused  -DUNIX -D__USE_LARGEFILE64 -D_FILE_OFFSET_BITS=64 -DLINUX -DLINUX32 -DLINUX64 -DMFX_API_VERSION=\"1.34\" -DMFX_GIT_COMMIT=\"34c7cbbb\" -DENABLE_INFERENCE -DMEDIA_VERSION_STR=\"20.3.0\" -g -O3 -std=c++11 -funroll-loops -ftree-vectorize -I${DL_SAMPLE_INCLUDE} -I${DL_SAMPLE_INCLUDE_V214} -I${NGRAPH_INCLUDE} -I${MFX_INCLUDE} -I${DL_SDK_INCLUDE} -I${DL_SDK_INCLUDE}/cpp -I${OPENCV_INCLUDE} -DLIBVA_SUPPORT -DLIBVA_DRM_SUPPORT -DLIBVA_X11_SUPPORT")
 
 set(ENABLE_EXPORTS false)
 set(CMAKE_EXE_LINKER_FLAGS "-L${OPENCV_LIB} -L${DL_SDK_LIB} -L${NGRAPH_LIB}")