[Build] Fix latest MSVC and CLang compiler errors (#1008)

* Explicit cast specification

* Explicit cast specification

* Suppress -Wno-tautological-compare in Clang 10 and above

https://reviews.llvm.org/rG8b0d14a8f0cc085afa2a9c86c237da81c74517fc

* Explicit cast specification

* Add HAVE_STDINT_H compiler flag

* Explicit casting mechanism type specification

* typo

AMBuildScript

@@ -231,6 +231,8 @@ class AMXXConfig(object):
         cxx.cflags += ['-Wno-address-of-packed-member']		
     if have_clang:
       cxx.cxxflags += ['-Wno-implicit-exception-spec-mismatch']
+      if cxx.version >= '10.0':
+        cxx.cxxflags += ['-Wno-tautological-compare']
       if cxx.version >= 'apple-clang-10.0':
         cxx.cxxflags += [
           '-Wno-inconsistent-missing-override',