Move files & update paths (#541)

* Move files & update paths

* Rename build to scripts.

* Fix paths

* Fix script.
diff --git a/MANIFEST.in b/MANIFEST.in
index edad2ed..6d4a12c 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,11 +1,11 @@
 include CONTRIBUTING.md
-include common/*.c
-include common/*.h
-include dec/*.c
-include dec/*.h
-include enc/*.c
-include enc/*.h
-include include/brotli/*.h
+include c/common/*.c
+include c/common/*.h
+include c/dec/*.c
+include c/dec/*.h
+include c/enc/*.c
+include c/enc/*.h
+include c/include/brotli/*.h
 include LICENSE
 include MANIFEST.in
 include python/bro.py
@@ -13,4 +13,4 @@
 include python/README.md
 include README.md
 include setup.py
-include tools/bro.c
+include c/tools/bro.c