msxml3: Fixed ISAXXMLReader_getContentHandler and ISAXXMLReader_getErrorHandler when second argument is NULL.

quartz: Make the file source rotate around the 'first' sample, to prevent starvation of a single stream.

This prevents the file source from starving a single thread off.

Destroying the stateblock potentially references the shader backend.
If the stateblock has active shaders when it is released, the shader's
destructor will tell the shader backend to destroy the corresponding
resources. This was exposed by my patch that moved the glsl program
lookup table into the backend's private data.

wintrust: Use path in WIN_TRUST_SUBJECT_FILE structure rather than assuming a path is passed in place of WINTRUST_DATA's pFile member.

Calling shader_select() from inside depth_blt() isn't necessarily
safe. shader_select() assumes CompileShader() has been called for the
current shaders, but that depends on STATE_VSHADER / STATE_PIXELSHADER
being applied. That isn't always true when depth_blt() gets called,
with the result that sometimes GLSL programs could be created with no
shader objects attached.

The uncommon case that this patch handles is enough whitespace being
on the first line of a paragraph to cause it to wrap.  In this case the
first non-space character will be wrapped onto the next line.

Runs that are skipped over still need to affect the wrapping position,
otherwise they won't affect further run positions.

Lines in ME_WrapHandleRun were removed because ME_CalcRunExtent is
already called unconditionally just before it in the call to
ME_WrapSizeRun.