Reduce the test timeout to 2 minutes, 10 is excessive.

Include the stderr / stdout in the error message when a test crashes.

Up the max proc memory limit from 3GB to 4GB. While our tests haven't started using dramatically more memory, Golang (which wraps the process) seems to use more recently.

Reduce delay in killing a timedout process.

Change-Id: I4634a788a5cae2cb088d70d2f35909a0264600d6
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/35692Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Ben Clayton <bclayton@google.com>