Update to 0.2.2

Fix portlint errors in Makefile

Changes in 0.2.2:

• https://github.com/yaml/libyaml/pull/95 -- build: do not install config.h
• https://github.com/yaml/libyaml/pull/97 -- appveyor.yml: fix Release build
• https://github.com/yaml/libyaml/pull/103 -- Remove unused code in yaml_document_delete
• https://github.com/yaml/libyaml/pull/104 -- Allow colons in plain scalars inside flow collections
• https://github.com/yaml/libyaml/pull/109 -- Fix comparison in tests/run-emitter.c
• https://github.com/yaml/libyaml/pull/117 -- Fix typo error
• https://github.com/yaml/libyaml/pull/119 -- The closing single quote needs to be indented...
• https://github.com/yaml/libyaml/pull/121 -- fix token name typos in comments
• https://github.com/yaml/libyaml/pull/122 -- Revert removing of open_ended after top level plain scalar
• https://github.com/yaml/libyaml/pull/125 -- Cherry-picks from PR 27
• https://github.com/yaml/libyaml/pull/135 -- Windows/C89 compatibility
• https://github.com/yaml/libyaml/pull/136 -- allow override of Windows static lib name