Add a global config flag to disable sourcemap-support injection

[kulshekhar]

context: #340 (comment)

Think this is related: I'm currently having to hack the ts-jest module to disable the injection of the sourceMapSupport.install() hook to get correct correct line numbers in stack traces (ts-jest 22.4.1 + jest 22.4.2 + typescript 2.7.2, target:es2017, node 8.9.4)

.... I'm guessing that something else in the tree (jest/jasmine?) is already performing the source-map-support install hook now which doesn't play nice when it's called twice.

ts-jest seems to work fine and as expected without the injected code, so maybe it's just not needed anymore? either way it would be nice to be able to disable the sourceMapSupport injection via the global options.

from @chrisfarms