Get rid of msvc banner for good.

backends.py

@@ -874,6 +874,7 @@ class NinjaBackend(Backend):
         linker_rule = linker_base + crstr + '_LINKER'
         abspath = os.path.join(self.environment.get_build_dir(), target.subdir)
         commands = []
+        commands += linker.get_linker_always_flags()
         if isinstance(target, build.Executable):
             commands += linker.get_std_exe_link_flags()
         elif isinstance(target, build.SharedLibrary):

environment.py

@@ -56,6 +56,9 @@ class CCompiler():
     def get_always_flags(self):
         return []
 
+    def get_linker_always_flags(self):
+        return []
+
     def get_soname_flags(self, shlib_name, path):
         return []
 
@@ -437,6 +440,9 @@ class VisualStudioCCompiler(CCompiler):
     def get_linker_exelist(self):
         return ['link'] # FIXME, should have same path as compiler.
 
+    def get_linker_always_flags(self):
+        return ['/nologo']
+
     def get_linker_output_flags(self, outputname):
         return ['/OUT:' + outputname]
 
@@ -668,6 +674,9 @@ class VisualStudioLinker():
     def get_always_flags(self):
         return VisualStudioLinker.always_flags
 
+    def get_linker_always_flags(self):
+        return VisualStudioLinker.always_flags
+
     def build_rpath_args(self, build_dir, rpath_paths):
         return []
 
@@ -682,13 +691,16 @@ class ArLinker():
 
     def get_exelist(self):
         return self.exelist
-    
+
     def get_std_link_flags(self):
         return self.std_flags
 
     def get_output_flags(self, target):
         return [target]
 
+    def get_linker_always_flags(self):
+        return []
+
     def get_coverage_link_flags(self):
         return []