Merge branch 'js/run-command-updates'

* js/run-command-updates:
  api-run-command.txt: describe error behavior of run_command functions
  run-command.c: squelch a "use before assignment" warning
  receive-pack: remove unnecessary run_status report
  run_command: report failure to execute the program, but optionally don't
  run_command: encode deadly signal number in the return value
  run_command: report system call errors instead of returning error codes
  run_command: return exit code as positive value
  MinGW: simplify waitpid() emulation macros

diff --cc builtin-merge.c
Simple merge

diff --cc git.c
Simple merge

diff --cc ll-merge.c
Simple merge

diff --cc run-command.c
Simple merge

diff --cc t/t5530-upload-pack-error.sh
index 757cc19ecce127ddd0cbf528f7678c2940ac1519,82ca3003dd2cd3c15b10280690e9ac829dc7c1eb..a696b8791b7caa44ae2bd16d6970a791f3a28d3d
--- 1/t/t5530-upload-pack-error.sh
--- 2/t/t5530-upload-pack-error.sh
+++ b/t/t5530-upload-pack-error.sh
@@@ -52,20 -51,14 +52,23 @@@ test_expect_success 'fsck fails' 
  test_expect_success 'upload-pack fails due to error in rev-list' '
  
        ! echo "0032want $(git rev-parse HEAD)
 -00000009done
 +0034shallow $(git rev-parse HEAD^)00000009done
  0000" | git upload-pack . > /dev/null 2> output.err &&
-       grep "waitpid (async) failed" output.err
+       # pack-objects survived
+       grep "Total.*, reused" output.err &&
+       # but there was an error, which must have been in rev-list
+       grep "bad tree object" output.err
  '
  
 +test_expect_success 'upload-pack fails due to error in pack-objects enumeration' '
 +
 +      ! echo "0032want $(git rev-parse HEAD)
 +00000009done
 +0000" | git upload-pack . > /dev/null 2> output.err &&
 +      grep "bad tree object" output.err &&
 +      grep "pack-objects died" output.err
 +'
 +
  test_expect_success 'create empty repository' '
  
        mkdir foo &&

diff --cc transport.c
Simple merge