make configure -redo and config.status able to handle spaces in arguments

Change-Id: If6ffe381b03595885570ae431a9937c6fdce164b
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>

configure

@@ -87,7 +87,13 @@ if [ x"$1" = x"-top-level" ]; then
 fi
 
 # later cache the command line in config.status
-OPT_CMDLINE=`echo $@ | sed 's,-v ,,g; s,-v$,,g'`
+OPT_CMDLINE=
+for i in "$@"; do
+    if [ "x$i" != "x-v" ]; then
+        [ -z "${i##* *}" ] && i="'$i'"
+        OPT_CMDLINE="$OPT_CMDLINE $i"
+    fi
+done
 
 # initialize global variables
 QMAKE_SWITCHES=
@@ -7040,7 +7046,7 @@ fi
 # finally save the executed command to another script
 #-------------------------------------------------------------------------------
 if [ `basename $0` != "config.status" ]; then
-    CONFIG_STATUS="$relpath/$relconf $OPT_CMDLINE"
+    CONFIG_STATUS="$relpath/$relconf$OPT_CMDLINE"
 
     # add the system variables
     for varname in $SYSTEM_VARIABLES; do

tools/configure/configureapp.cpp

@@ -4387,12 +4387,8 @@ void Configure::reloadCmdLine()
         QFile inFile(buildPath + "/configure" + dictionary[ "CUSTOMCONFIG" ] + ".cache");
         if (inFile.open(QFile::ReadOnly)) {
             QTextStream inStream(&inFile);
-            QString buffer;
-            inStream >> buffer;
-            while (buffer.length()) {
-                configCmdLine += buffer;
-                inStream >> buffer;
-            }
+            while (!inStream.atEnd())
+                configCmdLine += inStream.readLine().trimmed();
             inFile.close();
         }
     }
@@ -4405,7 +4401,7 @@ void Configure::saveCmdLine()
         if (outFile.open(QFile::WriteOnly | QFile::Text)) {
             QTextStream outStream(&outFile);
             for (QStringList::Iterator it = configCmdLine.begin(); it != configCmdLine.end(); ++it) {
-                outStream << (*it) << " " << endl;
+                outStream << (*it) << endl;
             }
             outStream.flush();
             outFile.close();