Final bit of link_test gone for good
Starting point for unit testing

Initial addition of Check unit testing framework (check.sf.net),
checking problem in GFileGetAbsoluteName() which have been rewritten.
Fix huge memory leak in test case 118

Forgot to check absolute path in GFileGetAbsoluteName() so that
file name can't be found for any font, causing OOM.
Fixes: https://github.com/abelcheung/fontforge-cjk/issues/18
Caused by commit: 4cbb727cce3ffe8ae077b4bf3fc10d1948c90b7f
                  76aff01a9b4c5ba537371d9de61ddce125b06a68
Merge branch 'master' of github.com:abelcheung/fontforge-cjk
Enable unit test in travis