Fix some compilation warnings and enable Windows JIT (#586)

samples/workload/bwa/CMakeLists.txt

@@ -117,6 +117,7 @@ ExternalProject_Add(bwa
   UPDATE_COMMAND git clean -fd && git checkout -- *
                   && ${CMAKE_COMMAND} -E echo "Copying pre-installed CMakeLists.txt"
                   && ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_SOURCE_DIR}/CMakeLists.bwa_wasm.txt CMakeLists.txt
+                  && git apply ../bwa.patch
   CONFIGURE_COMMAND  ${CMAKE_COMMAND}
                          -DWASI_SDK_PREFIX=${WASI_SDK_HOME}/wasi-sdk
                          -DCMAKE_TOOLCHAIN_FILE=${WASI_SDK_HOME}/wasi-sdk/share/cmake/wasi-sdk.cmake

samples/workload/bwa/bwa.patch

@@ -0,0 +1,13 @@
+diff --git a/utils.c b/utils.c
+index 9ceb1be..323299f 100644
+--- a/utils.c
++++ b/utils.c
+@@ -301,6 +301,7 @@ long peakrss(void)
+ #ifdef __linux__
+ 	return r.ru_maxrss * 1024;
+ #else
+-	return r.ru_maxrss;
++	/*return r.ru_maxrss;*/
++	return 0;
+ #endif
+ }