gtk-3-24: Bad --enable-profiler configure.ac handling
AC_ARG_ENABLE third argument means what to do if the option is passed to configure, this includes the explicit disabling of the option.
Thus the handling is broken and profiler integration is tested for and enabled if --disable-profiler
or --enable-profiler=no
is passed to configure.
$ ./configure --disable-profiler
<snip>
configure: error:
*** sysprof-capture-3 not found.