added splint annotations (fragment)

sefht.geany

src/lib/Makefile.am

src/lib/sefht/fragment.c

src/lib/sefht/fragment.h

src/lib/sefht/fragment_class.c

src/lib/sefht/fragment_data.c

src/lib/sefht/node_fragment.c

src/lib/sefht/validator_tag.c