[mcs] Reference System, System.Core and System.Xml when building.

This fixes compile errors in the generated csproj for mcs.

diff --git a/mcs/mcs/Makefile b/mcs/mcs/Makefile
index d2aa50e7a9c8371ae417511cb81057043950f723..301ef3efc5a5f652cc787aefcb89a0ecc7ca7ca4 100644 (file)
--- a/mcs/mcs/Makefile
+++ b/mcs/mcs/Makefile
@@ -12,6 +12,8 @@ EXTRA_DISTFILES = \
        cs-parser.jay           \
        mcs.exe.sources
 
+LIB_REFS = System System.Core System.Xml
+
 ifeq (basic, $(PROFILE))
 PROGRAM = basic.exe
 sourcefile = mcs.exe.sources