gh-409: connect followed by session.su causes privilege error

The problem was in the order of access checks
for functions:
    if a user has no universal access,
        find function
        check if a user has rights to execute the function

There were no pre-created function object for
'dostring', so access check for this function failed.

The fix is to give universal access to ADMIN user
right in bootstrap.snap and remove check for ADMIN uid
as a special case from access checks.
This avoids a functio lookup which would still find nothing.

The fix revealed a race condition in replica bootstrap
(see changed replication tests):
replica begins accepting requets before fully recovering.
Add a manual check for full replica recovery to make
the tests pass.

Also - remove 0*1.snap from RPM Spec

1) Backport `path_find`
2) Disable debuginfo in RPM
3) Disable failing part of BSDSocket test

Add provisioning for user type.
Support user type in alter.
Do not return roles in user_by_name().
Make it possible to grant privileges on roles ('execute').

Add a owner for a user, use owner privileges to check
whether or not it's possible to drop a user.

Rebuild empty.snap, it can be used as bootstrap.snap to
fill the schema from scratch.

Update bootstrap.snap with an index on _user[2] (second
field in _user).

t chec  # On branch stable

* Move building of modules into Lua (in rpmspec)
* Remove tarantool.cfg and init.d/tarantool_box from SCL spec (bug in cmake28-epel-6-x86_64)
* Merge two specs (for EL and other RPM linuxes)
* Add Fedora's Mock specifications

  * extra/rpm/tarantool-scl.rpm.spec - SCL spec for 1.5
  * extra/rpm/tarantool-el.rpm.spec.in - Enetrprise Linux 5/6 Specification
  * extra/rpm/tarantool.rpm.spec.in - Specification for other Linuxs
- Build (tarantool-el.rpm.spec and tarantool.rpm.spec) with `--define 'scl 15'`for SCL build.
- Preserve old spec (for compatibility)
- Add dependencies into Specifications, two specs for Mock.
- Create configuration files for Mock builds for EL-{5,6}-{i386,x86_64}

  Working with Mock:
    cmake .
    make new_rpm{_el,}_src
    mock -r <config> --init
    mock -r <config> --rebuild <path_to_srpm>

  Merging commits

* New brewspec, that gives ability to build latest stable
  (for latest master you need to pass '--devel' flag)
* All dependencies are inside this spec
* We can now test Tarantool (you need to pass '--with-tests'
  flag to 'brew')
* We can build Tarantool with -DCMAKE_BUILD_TYPE=Debug (default is
  'Release')
* Fix for name of pypi module - ('python-daemon', not 'daemon')
* Fix README for MacOSX