Merge branch 'ep/varscope'

Shrink lifetime of variables by moving their definitions to an
inner scope where appropriate.

* ep/varscope:
builtin/gc.c: reduce scope of variables
builtin/fetch.c: reduce scope of variable
builtin/commit.c: reduce scope of variables
builtin/clean.c: reduce scope of variable
builtin/blame.c: reduce scope of variables
builtin/apply.c: reduce scope of variables
bisect.c: reduce scope of variable

diff --cc bisect.c
Simple merge

diff --cc builtin/apply.c
Simple merge

diff --cc builtin/blame.c
Simple merge

diff --cc builtin/clean.c
Simple merge

diff --cc builtin/commit.c
Simple merge

diff --cc builtin/fetch.c
Simple merge

diff --cc builtin/gc.c
Simple merge