liq| automationtest|: padding
liq| callback|: bugfix: liqMDGMessage_addNodeAddedCallback() is not found in batch mode
liq| callback|: bugfix: ignore "liquidGlobalsExists()" in liqMessageCallback, or it leads to a crash.
liq| er|: update er_maketexture: x64, shader parameters name(e.g. coverageU --> i_coverageU)
liq| test|: update test cases.
liq| er|: #define ER_SPN()
liq|: exclude user-define light shader nodes in lightlink command, these nodes have no  dag-shape-path
liq| ipr|: bugfix: maya default camera is not exported, because it is invisible.
liq| er| connection|: 1.unsigned int --> eiInt, 2.IfErrorWarn --> IfMErrorWarn, 3. make sure tile_width>=0 and tile_height>=0.