* c14n.c include/libxml/c14n.h: adds support for C14N 1.1,
new flags at the API level
* runtest.c Makefile.am testC14N.c xmllint.c: add support in CLI
tools and test binaries
* result/c14n/1-1-without-comments/* test/c14n/1-1-without-comments/*:
add a new batch of tests