WL#543: Rewrite mysqlbug to two scripts

Rewrite mysqlbug to two scripts:

- One to collect data and make a nice template out of this
- One to start the editor with the template and email the result

The first could be called 'mysql_collect_info' (?) and the later 'mysqlbug'

The idea is that we should be able to use the collector script from other
programs to get information from MySQL, possible for automatic emailing
of a description of the system used to run MySQL.

The mysql_collect_info script should be extended with new intersting
data about the system (Memory size, cpu speed, number of cpus etc)

Also, have this script generate mysqlbug.txt for windows via
make_win_src_distribution.sh