to match distribution packages better:
remove "mysql" from server.rpm Provides, add it to the shared.rpm Provides.
fake provides that "mysql" and "mysql-libs" packages would've had.
cleanup:
remove auto-generated provides from the manual provides list.
fix the rpm packaging to work on Fedora18. Two problems:
* conflicts on common directories with other packages.
* more auto-generated requirements for mariadb-test.rpm
cmake/cpack_rpm.cmake:
* mark all cnf files with %config(noreplace)
* add the forgotten postun script
sql/sys_vars.cc:
0 for a string variable means "no default. But datadir has the default value.
support-files/rpm/server-postin.sh:
* use mysqld --help to determine the correct datadir in the presence of my.cnf files
(better than my_print_defaults, because it considers the correct group set).
* Only create users, and chown/chmod if it's a fresh install, not an upgrade.
* only run mysql_install_db if datadir does not exist
