tests: fix libwmf version
The current latest version is 0.2.8, but the test expects 3.0. 0.2.8 was
released in 2011, so it seems quite safe to require the latest version.
project('libwmf test', 'c')
-libwmf_dep = dependency('libwmf', version : '>=3.0')
+libwmf_dep = dependency('libwmf', version : '>= 0.2.8')
libwmf_ver = libwmf_dep.version()
assert(libwmf_ver.split('.').length() > 1, 'libwmf version is "@0@"'.format(libwmf_ver))
message('libwmf version is "@0@"'.format(libwmf_ver))
