bashrc-phq0.m4: added aliases

Alias for paccache to clear pkg cache
Alias for ssh connection to arch VMs
bashrc-phq0.m4: edited vnc aliases

Made vnc aliases more generic, but now must specify which comp
bashrc-phq0.m4: delete whitespace.
bashrc-common: simplified git aliases

Rather than aliases for each command, just make g=git
bashrc-phq0.m4: added new alias for pacdiff

Make pacdiff search in /boot /etc and /usr by default.