Add libproc_macro from local rust to stage0

This library is now required to run rustc 1.14.0.

Author: cuviper

src/etc/local_stage0.sh

@@ -71,6 +71,7 @@ cp ${PREFIX}/${LIB_DIR}/${LIB_PREFIX}log*${LIB_SUF} ${TARG_DIR}/stage0/${LIB_DIR
 cp ${PREFIX}/${LIB_DIR}/${LIB_PREFIX}rbml*${LIB_SUF} ${TARG_DIR}/stage0/${LIB_DIR}/
 cp ${PREFIX}/${LIB_DIR}/${LIB_PREFIX}serialize*${LIB_SUF} ${TARG_DIR}/stage0/${LIB_DIR}/
 cp ${PREFIX}/${LIB_DIR}/${LIB_PREFIX}term*${LIB_SUF} ${TARG_DIR}/stage0/${LIB_DIR}/
+cp ${PREFIX}/${LIB_DIR}/${LIB_PREFIX}proc_macro*${LIB_SUF} ${TARG_DIR}/stage0/${LIB_DIR}/
 
 # do not fail if one of the above fails, as all we need is a working rustc!
 exit 0