warning: cannot optimize possibly infinite loops
gcc does not detect that the "infinite" loops are actually just one or
two iterations, depending on the has_similar value being FALSE or
TRUE. It realizes it if the iteration variable and the iteration stop
value are both enum values.
The configure test for __attribute__((constructor)) succeeds when
compiling with Sun Studio 12 on OpenSolaris but the attribute
is just ignored and has no actual effect. This causes the test
suite to not run any tests at all. With this patch we revert to
always using make-cairo-test-constructors.pl.
Avoid calling libtool to link every single test case, by building just one
binary from all the sources.
This binary is then given the task of choosing tests to run (based on user
selection and individual test requirement), forking each test into its own
process and accumulating the results.
