Our implementation of eglGetProcAddress() resolves the function addresses
in run time. Typically this is not an issue, but when a gl function is
also implemented by the calling app the address was resolved to the calling
app's version of the function rather than ours. This is the case with the
glDrawTex{isfx}OES functions in the 1.1 conformance test.
The solution is to add the -Bsymbolic switch when linking our libraries,
so all symbol resolution is done internaly.
The same fix should probably be done for Mac.
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