Fix lighting when lightpos and spec coef are 0.

Zero to the power of zero is mathematically undefined, NVIDIA chokes but
AMD seems to accept it.  Not well tested on Android.

Fixes #2424.
Search in memory view
Forgot to revert that.
Merge pull request #3553 from Kingcom/MemViewSearch

Search in memory view
Merge pull request #3547 from unknownbrackets/gpu-lighting2

Fix lighting when lightpos and spec coef are 0
Fix some const char * conversion warnings.
Merge pull request #3555 from unknownbrackets/warnings

Fix some const char * conversion warnings
Do some additional checks on what kind of eboot it is before trying to boot it.