Progress: controller program and other minor tweaks.

Progress: controller program and other minor tweaks.

Add support for "affinity" and "limit" to the controller program (and the execute functions from the execute projects).

The "affinity" allows settings specific CPUs to run the process on.

The "limit" allows for customizing the resource limits (ie: ulimit) in the process.
The resource names are used as-is, such as defined in /etc/security/limits.conf on some Linux systems.
Only the well known resource types are supported.
(For example, debian systems has 'chroot', which is not supported by this implementation at this time.)

New projects are added to address these features.
A project f_schedule is suggested by the comments added in this commit and may be introduced on a later date.

Minor tweaks includes using a global static variable for the space as a string " ".