common: add constants of glyph support level
#define KBD_FLAG_CAPITAL 0x0004
#define TS_SYNC_KANA_LOCK 0x0008
+/* Glyph Cache Capability Set: GlyphSupportLevel (MS-RDPBCGR 2.2.7.1.8) */
+#define GLYPH_SUPPORT_NONE 0x0000
+#define GLYPH_SUPPORT_PARTIAL 0x0001
+#define GLYPH_SUPPORT_FULL 0x0002
+#define GLYPH_SUPPORT_ENCODE 0x0003
+
/******************************************************************************
*
* Constants come from other Microsoft products
