contrib/hgsh/Makefile

typing: add some type annotations to mercurial/phases.py

Some of these were helpful in typing other modules, and then I typed the
easy-ish ones.  Black forces the long `Phasedefaults` definition to be wrapped,
which pytype seems OK with (as shown with `reveal_type()`), but it does seem to
confuse PyCharm a bit.

Differential Revision: https://phab.mercurial-scm.org/D10126

CC := gcc
CFLAGS := -g -O2 -Wall -Werror

prefix ?= /usr/bin

hgsh: hgsh.o
	$(CC) -o $@ $<

install: hgsh
	install -m755 hgsh $(prefix)

clean:
	rm -f *.o hgsh