Configure GCC as default on vagrant.
Configure GCC as default on vagrant.

Bump CPUs to 2.

[ci skip]

nanodbc/nanodbc,ChrisBFX/nanodbc,mcg1969/nanodbc,norsync/nanodbc,norsync/nanodbc,nanodbc/nanodbc,ChrisBFX/nanodbc,mcg1969/nanodbc