refactoring writer
Merge branch 'master' of https://github.com/bluegum/PegDF

Conflicts:
	pdfdoc/pdffilter.c
	pdfdoc/pdffilter.h
	pdfdoc/pdfwrite.c
Merged with origin/master
Merge branch 'master' of https://github.com/bluegum/PegDF
Merge branch 'master' of https://github.com/bluegum/PegDF

Conflicts:
	pdfdoc/pdffilter.h
Merge branch 'master' of https://github.com/bluegum/PegDF
Merged with remote
Merge branch 'master' of https://github.com/bluegum/PegDF
Merge branch 'master' of https://github.com/bluegum/PegDF
Merge branch 'master' of https://github.com/bluegum/PegDF
Merge branch 'master' of https://github.com/bluegum/PegDF
replaced openssl source with git-submodule