glog: Bump version to 0.4.0

bump glog version from 0.3.5 to 0.4.0

Tested by building another package which depends on glog and verify that
it builds successfully.

Signed-off-by: Amol Bhave <ambhave@fb.com>

libs/libglog/patches/100-fix-musl-compilation.patch

@@ -0,0 +1,13 @@
+Index: glog-0.4.0/src/symbolize_unittest.cc
+===================================================================
+--- glog-0.4.0.orig/src/symbolize_unittest.cc
++++ glog-0.4.0/src/symbolize_unittest.cc
+@@ -401,7 +401,7 @@ int main(int argc, char **argv) {
+   FLAGS_logtostderr = true;
+   InitGoogleLogging(argv[0]);
+   InitGoogleTest(&argc, argv);
+-#if defined(HAVE_SYMBOLIZE)
++#if defined(HAVE_SYMBOLIZE) && defined(HAVE_STACKTRACE)
+ # if defined(__ELF__)
+   // We don't want to get affected by the callback interface, that may be
+   // used to install some callback function at InitGoogle() time.