Add uthash as a submodule

.gitmodules

@@ -10,3 +10,6 @@
 [submodule "knc-asic"]
 	path = knc-asic
 	url = git://github.com/KnCMiner/knc-asic
+[submodule "uthash"]
+	path = uthash
+	url = git://github.com/troydhanson/uthash

README.ASIC

@@ -197,7 +197,6 @@ cd ..
 git clone git://github.com/luke-jr/bfgminer
 cd bfgminer
 ./autogen.sh
-git clone git://github.com/troydhanson/uthash
 ./configure --host=arm-angstrom-linux-gnueabi --enable-knc --disable-other-drivers CFLAGS="-I$PWD/uthash/src"
 make AR=arm-angstrom-linux-gnueabi-ar
 

uthash

@@ -0,0 +1 @@
+Subproject commit fe01a6ad1bf5fa722930d074fd41d0214d351a7e