Revert the backout for (aka reland) "Do not generate a corefile if gdb crashes." - the cause was unrelated.
Revert the backout for (aka reland) "Do not generate a corefile if gdb crashes." - the cause was unrelated.

This reverts commit 540f6aafcaa6596b84ff0d04019718e9af3835ee.

MozillaSecurity/funfuzz,MozillaSecurity/funfuzz,nth10sd/funfuzz,nth10sd/funfuzz,nth10sd/funfuzz,MozillaSecurity/funfuzz