CLEANUP: mux-h1: Rename H1C_F_CS_* flags and reorder H1C flags

H1C_F_CS_* flags are renamed into H1C_F_ST_*. They reflect the connection
state. So "ST" is well suited. "CS" is confusing because it is also the
abbreviation for conn-stream.

In addition, H1C flags are reordered.
1 file changed