* MathDebug was intended to provide advanced debugging functionality
for the math extension. However, the interesting debugging and
logging feature never made it from the debug branch to the master.
* The current debug functionality is mostly useless. Only some values
are written to memory and never used thereafter.
* This change moves the existing functionality to the MathSearch
extension and introduced the required hook for that.
Details:
* $wgMathDebug is removed
* A new Hook MathRenderingResultRetrieved is created
* The math rendering object is printed to the svg error
page if wgDebugComments is active (instead of wgMathDebug)
Change-Id: I6fad69b5d9b9ca8a7d12c7e410d3ae6180fbddbf
5c12ed983f