Use strings to identify section types in the on-disk repo format.

Previously, a given razor file type had a fixed number of sections in a
fixed order, identified by an integer type. Now, sections are identified
by a named string (stored in a string pool after the section lists).

This will allow for razor files to contain arbitrary sections.

For bonus points, also drop the 4k section alignment and change the
magic byte string to "RZDB".

committer: Kristian H?gsberg <krh@redhat.com>

 aclocal.m4

 autom4te.cache

 compile

 config.guess

 config.h

 config.h.in

 config.log

 config.status

 config.sub

 configure

 depcomp

 gtk-doc.make

 INSTALL

 install-sh

 intltool-extract

 intltool-extract.in

 intltool-merge

 intltool-merge.in

 intltool-update

 intltool-update.in

 libtool

 ltmain.sh

 Makefile

 Makefile.in

 missing

 mkinstalldirs

 py-compile

 stamp-h1

 *.o

 ChangeLog

 *.tar.gz

 *~