Minimally resurrect fine-grained progress callbacks on install

- Add an internal version where we can pass the psm for notifications for
  now, the callbacks will need a major rework but now is not the time...
Add a "release" target to Makefile.maint, mainly for changelog updating atm
Drop the stupid source globbing from setup.py

- What was I thinking? Trying to be lazy in a way that only created
  more work, and broke with rpmfiles addition in whats most certainly
  a non-obvious way. Duh.
Hopefully fix in-tree python build with setup.py

- Detect in-tree build in setup.py and adjust paths accordingly,
  based on patch by Bohuslav Kabrda.
Use pax format for dist tarballs.

- Last year somebody decided that uid/gid stored in automake'd archives
  is somehow important, causing ustar format to be unusable with large
  uid/gid :(
  https://lists.gnu.org/archive/html/automake/2013-02/msg00075.html
rpm2archive missing from POTFILES
add support for "%autosetup -S git_am"

- Similar to "%autosetup -S git", but assumes git-formatted patch files
  and hence preserves authorship information and commit messages.

Signed-off-by: Panu Matilainen <pmatilai@redhat.com>
New function addFileListRecord()

This function takes care about appending of FileListRec structure
to the FileList struct's files.
Split handlePreambleTag() into handlePreambleTag() and applyPreambleTag()
Add parseChangelog_internal.h and export addChangelogEntry() and rpmDateToTimet() in it
Add parsePreamble_internal.h

Exported symbols:
preambleList
copyTagsDuringParse
applyPreambleTag
checkForValidArchitectures
checkForDuplicates
checkForRequired
mfs: MFS Initial commit
mfs: Add mfsmodules/ dir with an example module
Propagate spec further in build/files.c
addFileListRecord() moved to build/files_internal.h
MFS do not ignore glob in filehooks
mfs: fix adding of summary in mfsPackageNew()
rpmfc: rpmfcAttributes() takes target argv array as an argument
rpmfc: initialization moved from rpmfcClassify() to rpmfcInit()
rpmfc: Add rpmfcClassifyFile() and internal type rpmcf (classified file)