Fix/silence some warnings in 'make check'

'make check' currently fails with the following in src/test-suite.log (how can one tell automake not to hide the error message in a file?!?):

FAIL: check-doc-syntax.sh

Checking documentation for incorrect syntax ./cairo-cogl-surface.c: * cairo_cogl_pipeline_ts. On failure, both pointers will be set to ./cairo-cogl-surface.c:/* Mostly taken from cairo_vg_surface.c / Error: some function names in the docs are not followed by parentheses. Fix this by searching for the following regexp in the above files: '^[^:]:[/ ][](|[ ].)([^#']|^)<(cairo_[][<>/0-9a-z_]*>[^][<>(])' FAIL check-doc-syntax.sh (exit status: 1)

This commit silences that. The fix is likely not correct, but since these are normal comments and not actual doc comments, it does not matter much.

Signed-off-by: Uli Schlachter psychon@znc.in