Instead of including GL/gl.h directly it now includes cogl/cogl.h
instead which should include the right GL header.
Instead of using dlopen to specifically open libGL it now tries to use
dlsym with RTLD_NEXT. This requires defining _GNU_SOURCE on GNU
systems. If RTLD_NEXT is not available it will try passing NULL which
is unlikely to work but it will at least catch the case where it
returns the wrapper version of glGetString to prevent infinite
recursion.
This should hopefully make it work on OS X where the name of the
header and library are different (although this is currently
untested).
* tests/tools/Makefile.am: Optionally build the
libdisable-npots.la library depending on whether libdl was
detected in the configure script. A helper script is also
generated to setup the LD_PRELOAD.
* tests/conform/Makefile.am: There are now two versions of the
test-report and full-report rules. test-report-normal is the same
as before and test-report-disable-npots runs the tests with the
disable-npots wrapper script. The full-report rule runs both of
them and displays two separate HTML files. The test-report rule
just runs the normal version as before.
* configure.ac: Add a test for libdl
* tests/tools/disable-npots.sh.in: New file. Template for the
helper script
* tests/tools/disable-npots.c: New file
