Make directed_test support static libs

1.Make directed_test apps linked against static libs
of hip, rocclr, rocr, roct and amd_comgr.
2.Remove custom_target amdhip64_static_combiner.
3.Support EXCLUDE_HIP_LIB_TYPE <static|shared>.
4.Simplify argument list parsing.
5.Fix hip_pch.o missing issue in samples' build.
6.Fix some original small bugs.

Change-Id: I30f5e65367613152ce86b80b13e1c9f2a28da803

samples/0_Intro/bit_extract/bit_extract.cpp

@@ -54,6 +54,20 @@ int main(int argc, char* argv[]) {
     size_t N = 1000000;
     size_t Nbytes = N * sizeof(uint32_t);
 
+#ifdef __HIP_ENABLE_PCH
+    // Verify hip_pch.o
+    const char* pch = nullptr;
+    unsigned int size = 0;
+    __hipGetPCH(&pch, &size);
+    printf("pch size: %u\n", size);
+    if (size == 0) {
+        printf("__hipGetPCH failed!\n");
+        return -1;
+    } else {
+        printf("__hipGetPCH succeeded!\n");
+    }
+#endif
+
     int deviceId;
     CHECK(hipGetDevice(&deviceId));
     hipDeviceProp_t props;