Moving some code around

[nfultz]

• Pull out fab inner loop
• Pull out vararg checking
• pull out ID generation

[coveralls]

Coverage decreased (-0.3%) to 91.786% when pulling 32470af on nfultz/refactor_fabricate2 into 63d5a37 on master.

[coveralls]

Coverage decreased (-0.3%) to 91.786% when pulling 32470af on nfultz/refactor_fabricate2 into 63d5a37 on master.

[coveralls]

Coverage decreased (-1.05%) to 91.016% when pulling e001b63 on nfultz/refactor_fabricate2 into 63d5a37 on master.

[coveralls]

Coverage decreased (-1.5%) to 90.535% when pulling d4ea9c0 on nfultz/refactor_fabricate2 into 63d5a37 on master.

[coveralls]

Coverage decreased (-1.4%) to 90.65% when pulling 151a9a9 on nfultz/refactor_fabricate2 into 63d5a37 on master.

[coveralls]

Coverage decreased (-1.4%) to 90.65% when pulling 151a9a9 on nfultz/refactor_fabricate2 into 63d5a37 on master.

[coveralls]

Coverage decreased (-1.3%) to 90.763% when pulling ed14837 on nfultz/refactor_fabricate2 into 63d5a37 on master.

[coveralls]

Coverage decreased (-1.3%) to 90.763% when pulling ed14837 on nfultz/refactor_fabricate2 into 63d5a37 on master.

[coveralls]

Coverage decreased (-1.3%) to 90.763% when pulling cc91b2a on nfultz/refactor_fabricate2 into 63d5a37 on master.

[coveralls]

Coverage decreased (-1.3%) to 90.763% when pulling cc91b2a on nfultz/refactor_fabricate2 into 63d5a37 on master.