v1.7.2

User improvements
Warns when creating or parsing a bam file with duplicate reference sequence names, which can cause errors later.
Generates bam index with filtered bam file when using filter mode.

Installation improvements
Simplified autogen script.
Distributed configure script should just work.
Fixed --with-libhts-lib, --with-libhts-inc, --with-libcfu-lib, --with-libcfu-inc flags during setup.