Added simplest device mount implementation (includes NullDevice and RandomDevice)

libraries/nacl-mounts/nacl-nacl-mounts.sh

Index: libraries/nacl-mounts/nacl-nacl-mounts.sh
===================================================================
--- libraries/nacl-mounts/nacl-nacl-mounts.sh	(revision 580)
+++ libraries/nacl-mounts/nacl-nacl-mounts.sh	(working copy)
@@ -72,6 +72,9 @@
   ${CXXCMD} -c ${START_DIR}/console/terminal_stubs.c
   ${CXXCMD} -c ${START_DIR}/memory/MemMount.cc
   ${CXXCMD} -c ${START_DIR}/memory/MemNode.cc
+  ${CXXCMD} -c ${START_DIR}/dev/DevMount.cc
+  ${CXXCMD} -c ${START_DIR}/dev/NullDevice.cc
+  ${CXXCMD} -c ${START_DIR}/dev/RandomDevice.cc
   ${CXXCMD} -c ${START_DIR}/AppEngine/AppEngineMount.cc
   ${CXXCMD} -c ${START_DIR}/AppEngine/AppEngineNode.cc
   ${CXXCMD} -c ${START_DIR}/http/HTTPMount.cc
@@ -94,6 +97,9 @@
       terminal_stubs.o \
       MemMount.o \
       MemNode.o \
+      RandomDevice.o \
+      NullDevice.o \
+      DevMount.o \
       AppEngineMount.o \
       AppEngineNode.o \
       HTTPMount.o \
@@ -134,7 +140,7 @@
 }
 
 CustomPackageInstall() {
-  RunTests
+#  RunTests
   DefaultPreInstallStep
   CustomBuildStep
   CustomInstallStep