libgo: keep c0 and c1 out of runtime.inc

    
    The constants named c0 and c1 turn up as macros in runtime.inc.  This
    reportedly breaks building on Solaris 11, where there is a system struct
    that has a field named c1.  The constants aren't needed by the runtime C
    code, so avoid the problem by grepping them out.
    
    Reviewed-on: https://go-review.googlesource.com/31730

From-SVN: r241432

gcc/go/gofrontend/MERGE

-9806c8a8e4e448eaf6810ff1acffa715745d2549
+6d9929a1641b180e724c2fdcdd55f6a254f1dec0
 
 The first line of this file holds the git revision number of the last
 merge done from the gofrontend repository.

libgo/Makefile.am

@@ -1230,7 +1230,7 @@ runtime-go.lo:
 runtime.inc: s-runtime-inc; @true
 s-runtime-inc: runtime-go.lo Makefile
 	rm -f runtime.inc.tmp2
-	grep -v "#define _" runtime.inc.tmp > runtime.inc.tmp2
+	grep -v "#define _" runtime.inc.tmp | grep -v "#define c0 " | grep -v "#define c1 " > runtime.inc.tmp2
 	for pattern in '_G[a-z]' '_P[a-z]' _Max _Lock _Sig _Trace _MHeap _Num; do \
 	  grep "#define $$pattern" runtime.inc.tmp >> runtime.inc.tmp2; \
 	done

libgo/Makefile.in

@@ -3621,7 +3621,7 @@ runtime-go.lo:
 runtime.inc: s-runtime-inc; @true
 s-runtime-inc: runtime-go.lo Makefile
 	rm -f runtime.inc.tmp2
-	grep -v "#define _" runtime.inc.tmp > runtime.inc.tmp2
+	grep -v "#define _" runtime.inc.tmp | grep -v "#define c0 " | grep -v "#define c1 " > runtime.inc.tmp2
 	for pattern in '_G[a-z]' '_P[a-z]' _Max _Lock _Sig _Trace _MHeap _Num; do \
 	  grep "#define $$pattern" runtime.inc.tmp >> runtime.inc.tmp2; \
 	done