Bug 1040939 - Fix startup error "Couldn't load XPCOM" Package sandboxbroker.dll r=ewong rs=bustagefix

Ports Firefox bugs:
Bug 933947 - Check for sandboxbroker.dll in use from the installer and uninstaller
Bug 985252 - Sandbox Gecko Media Plugins (including OpenH264) for Windows
-  Build sandbox code regardless of whether --enable-content-sandbox/MOZ_CONTENT_SANDBOX is provided.
-  Enable sandboxing of GMP plugins.
-  Enable `SandboxBroker` to set different security policies for different process types.

suite/installer/package-manifest.in

@@ -680,6 +680,11 @@
 @BINPATH@/components/pipnss.xpt
 @BINPATH@/components/pippki.xpt
 
+; For process sandboxing
+#if defined(XP_WIN)
+@BINPATH@/@DLL_PREFIX@sandboxbroker@DLL_SUFFIX@
+#endif
+
 ; for Solaris SPARC
 #ifdef SOLARIS
 bin/libfreebl_32fpu_3.so

suite/installer/windows/nsis/shared.nsh

@@ -999,6 +999,7 @@
   Push "nssdbm3.dll"
   Push "sqlite3.dll"
   Push "mozsqlite3.dll"
+  Push "sandboxbroker.dll"
   Push "xpcom.dll"
   Push "crashreporter.exe"
   Push "updater.exe"