Move public headers to src/git

It's arguably smoother to keep them close to the source,
as that's where one's working when modifying them. More
importantly, though, is the ability to use private headers
in the src/ dir that simply include "git/$samename.h" to
get to the public API at the same time.

Signed-off-by: Andreas Ericsson <ae@op5.se>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

.gitignore

 /apidocs
-/include/git/config.h
+/src/git/config.h
 *.o
 *.a
 *.exe

Makefile

@@ -5,16 +5,18 @@ DOXYGEN = doxygen
 CFLAGS = -g -O2 -Wall
 OS     = unix
 
-BASIC_CFLAGS := -Iinclude
+BASIC_CFLAGS := -Isrc
 BASIC_CFLAGS += -DGIT__PRIVATE
 BASIC_CFLAGS += -fvisibility=hidden
 
 OBJS = $(patsubst %.c,%.o,$(wildcard src/*.c))
-HDRS = $(wildcard include/git/*.h)
+HDRS = $(wildcard src/*.h)
+PUBLIC_HEADERS = $(wildcard src/git/*.h)
+HDRS += $(PUBLIC_HEADERS)
 
 OBJS += src/os/$(OS).o
-HDRS += include/git/config.h
-HDRS += include/git/os/$(OS).h
+HDRS += src/git/config.h
+HDRS += src/git/os/$(OS).h
 
 GIT_LIB = libgit2.a
 
@@ -29,7 +31,7 @@ clean:
 	rm -f $(GIT_LIB)
 	rm -f src/*.o
 	rm -f tests/*.o tests/*.exe tests/*.toc
-	rm -f include/git/config.h
+	rm -f src/git/config.h
 	rm -rf apidocs
 
 apidocs:
@@ -41,7 +43,7 @@ test: $(TEST_RUN)
 .c.o:
 	$(CC) $(BASIC_CFLAGS) $(CFLAGS) -c $< -o $@
 
-include/git/config.h: include/git/config.h.in
+src/git/config.h: src/git/config.h.in
 	sed 's/@@OS@@/$(OS)/g' $< >$@+
 	mv $@+ $@
 
@@ -62,12 +64,12 @@ $(patsubst %.exe,%.toc,$(TEST_EXE)): tests/%.toc: tests/%.c
 	mv $@+ $@
 
 $(TEST_OBJ): tests/%.o: tests/%.c
-	$(CC) -Iinclude $(CFLAGS) -c $< -o $@
+	$(CC) -Isrc $(CFLAGS) -c $< -o $@
 
 $(patsubst %.exe,%_main.o,$(TEST_EXE)): tests/%_main.o: $(HDRS)
 $(patsubst %.exe,%_main.o,$(TEST_EXE)): tests/%_main.o: $(T_MAIN_C)
 $(patsubst %.exe,%_main.o,$(TEST_EXE)): tests/%_main.o: tests/%.toc
-	$(CC) -Iinclude -I. '-DTEST_TOC="$<"' \
+	$(CC) -Isrc -I. '-DTEST_TOC="$<"' \
 		-c $(T_MAIN_C) \
 		-o $@