Allow mc.sh and rc.sh to work when path to mc/rc.exe has spaces

The eval call in these scripts was failing for me because the path to
them on my windows machine contained spaces. I also fixed some
copy/paste-os from when (evidently) the mc.sh script was created by
copying the rc.sh script and modifying it.

erts/etc/win32/cygwin_tools/vc/mc.sh

@@ -24,15 +24,15 @@ CMD=""
 OUTPUT_DIRNAME=""
 
 # Find the correct mc.exe. This could be done by the configure script,
-# But as we seldom use the resource compiler, it might as well be done here...
+# But as we seldom use the message compiler, it might as well be done here...
 MCC=""
 save_ifs=$IFS
 IFS=:
 for p in $PATH; do 
     if [ -f $p/mc.exe ]; then 
 	if [ -n "`$p/mc.exe -? 2>&1 >/dev/null </dev/null \
                  | grep -i \"message compiler\"`" ]; then 
-	    MCC=$p/mc.exe
+	    MCC=`echo "$p/mc.exe" | sed 's/ /\\\\ /g'`
 	fi
     fi
 done
@@ -68,8 +68,8 @@ while test -n "$1" ; do
 done
 p=$$
 if [ "X$MC_SH_DEBUG_LOG" != "X" ]; then
-    echo rc.sh "$SAVE" >>$MC_SH_DEBUG_LOG
-    echo rc.exe $CMD >>$MC_SH_DEBUG_LOG
+    echo mc.sh "$SAVE" >>$MC_SH_DEBUG_LOG
+    echo mc.exe $CMD >>$MC_SH_DEBUG_LOG
 fi
 if [ -n "$OUTPUT_DIRNAME" ]; then
     cd $OUTPUT_DIRNAME

erts/etc/win32/cygwin_tools/vc/rc.sh

@@ -30,8 +30,8 @@ save_ifs=$IFS
 IFS=:
 for p in $PATH; do 
     if [ -f $p/rc.exe ]; then 
-	if [ -n "`$p/rc.exe -? 2>&1 | grep -i "resource compiler"`" ]; then 
-	    RCC=$p/rc.exe
+	if [ -n "`$p/rc.exe -? 2>&1 | grep -i "resource compiler"`" ]; then
+	    RCC=`echo "$p/rc.exe" | sed 's/ /\\\\ /g'`
 	fi
     fi
 done