display: Remove klockwork warnings and errors.

Remove all klockwork warnings and errors for libgralloc,
libhwcomposer, liboverlay, libqdutils, libqservice, libvirtual,
libexternal libraries to avoid buffer overflow and memory leaks.

Change-Id: I078143bcbcf5e4b342156bd8305a644566f7cc4b
diff --git a/libqservice/IQService.cpp b/libqservice/IQService.cpp
index 096444f..f0d7576 100644
--- a/libqservice/IQService.cpp
+++ b/libqservice/IQService.cpp
@@ -123,7 +123,7 @@
     snprintf(buf, size, "/proc/%d/cmdline", pid);
     fd = open(buf, O_RDONLY);
     if (fd < 0) {
-        strcpy(buf, "Unknown");
+        strlcpy(buf, "Unknown", size);
     } else {
         int len = read(fd, buf, size - 1);
         buf[len] = 0;