windows: add process creation flags

Fixes golang/go#22801

Change-Id: I1f466e26bcdf52bdd0df09bd81e31dde10347862
Reviewed-on: https://go-review.googlesource.com/78618
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>

windows/types_windows.go

@@ -159,9 +159,6 @@ const (
 	WAIT_OBJECT_0  = 0x00000000
 	WAIT_FAILED    = 0xFFFFFFFF
 
-	CREATE_NEW_PROCESS_GROUP   = 0x00000200
-	CREATE_UNICODE_ENVIRONMENT = 0x00000400
-
 	PROCESS_TERMINATE         = 1
 	PROCESS_QUERY_INFORMATION = 0x00000400
 	SYNCHRONIZE               = 0x00100000
@@ -178,6 +175,26 @@ const (
 	APPLICATION_ERROR = 1 << 29
 )
 
+const (
+	// Process creation flags.
+	CREATE_BREAKAWAY_FROM_JOB        = 0x01000000
+	CREATE_DEFAULT_ERROR_MODE        = 0x04000000
+	CREATE_NEW_CONSOLE               = 0x00000010
+	CREATE_NEW_PROCESS_GROUP         = 0x00000200
+	CREATE_NO_WINDOW                 = 0x08000000
+	CREATE_PROTECTED_PROCESS         = 0x00040000
+	CREATE_PRESERVE_CODE_AUTHZ_LEVEL = 0x02000000
+	CREATE_SEPARATE_WOW_VDM          = 0x00000800
+	CREATE_SHARED_WOW_VDM            = 0x00001000
+	CREATE_SUSPENDED                 = 0x00000004
+	CREATE_UNICODE_ENVIRONMENT       = 0x00000400
+	DEBUG_ONLY_THIS_PROCESS          = 0x00000002
+	DEBUG_PROCESS                    = 0x00000001
+	DETACHED_PROCESS                 = 0x00000008
+	EXTENDED_STARTUPINFO_PRESENT     = 0x00080000
+	INHERIT_PARENT_AFFINITY          = 0x00010000
+)
+
 const (
 	// flags for CreateToolhelp32Snapshot
 	TH32CS_SNAPHEAPLIST = 0x01