[PATCH 0/2] Support sizes >=2G in various config options, v2

New in this version:

 - overflow detection, as suggested by Johannes Sixt (on 32-bit
   platforms too).
 - no renaming of NO_STRTOUMAX nor NO_STRTOULL.

I think this covers all the bases, including detection of configuration values that overflow signed but not unsigned type only after factor-application (as '3g' would on a 32-bit Linux box).

No new git testsuite failures. (No tests either, because I can't think of one that will reliably induce overflow on a 64-bit box without being totally ludicrous.)

Nick Alcock (2):
  Add strtoimax() compatibility function.
  Support sizes >=2G in various config options accepting 'g' sizes.

 Makefile           |    6 +++---
 compat/strtoimax.c |   10 ++++++++++
 config.c           |   43 +++++++++++++++++++++++++++++++++----------
 3 files changed, 46 insertions(+), 13 deletions(-)
 create mode 100644 compat/strtoimax.c