optionally use existing ssh key for amazon builders

Updates googlecompute build to v1 API & uses boot persistent disk

builder/vmware-vmx: add cloning support on Windows [GH-824]

Update Ansible provisioner to set cwd to staging directory.

Properly return error when invalid instance state is found

fixing colored output of Makefile

common: fix error handeling when creating a floppy

builder/digitalocean: updated default image_id, fixes #1032

builder/digitalocean: updated default image_id, per #1032

use old ssh code until higebu's branch (#1030) is ready, see #1019

Changing to the v1 google-api-go-client. Now creates a persistent disk as the boot disk, and sets it to auto delete

The colored output is broken when using Zsh.

\033[32;01m==> Installing dependencies\033[0m
\033[32;01m==> Building\033[0m

After adding the parameter -e to echo I get the expected green lines.

Fix a trailing comma in an example template

Fix syntax error

Fix issue where using double quotes instead of round brackets would cause the following error:
./scripts/devcompile.sh: line 30: 10#1.2 > 10#1.2.1: syntax error: invalid arithmetic operator (error token is ".2 > 10#1.2.1")

builder/qemu: support user templates in SSH key path