Fix not trying hard enough to find the correct file on build errors.

If there are multiple files with the same name, then we try harder to
find the correct one. That is for jom and nmake we have a relative path
so we try to find a file which matches the relative path completly.
Instead of just comparing the last part.
(cherry picked from commit 156db18592)

src/plugins/cmakeprojectmanager/makestep.cpp

@@ -26,7 +26,6 @@
 ** contact the sales department at http://qt.nokia.com/contact.
 **
 **************************************************************************/
-
 #include "makestep.h"
 #include "cmakeprojectconstants.h"
 #include "cmakeproject.h"

src/plugins/projectexplorer/abstractmakestep.cpp

@@ -149,10 +149,26 @@ void AbstractMakeStep::slotAddToTaskWindow(const QString & fn, int type, int lin
                 }
             }
         }
-        if (possibleFiles.count() == 1)
+        if (possibleFiles.count() == 1) {
             filePath = possibleFiles.first().filePath();
-        else
+        } else {
-            qWarning() << "Could not find absolute location of file " << filePath;
+            // More then one filename, so do a better compare
+            // Chop of any "../"
+            while (filePath.startsWith("../"))
+                filePath = filePath.mid(3);
+            int count = 0;
+            QString possibleFilePath;
+            foreach(const QFileInfo & fi, possibleFiles) {
+                if (fi.filePath().endsWith(filePath)) {
+                    possibleFilePath = fi.filePath();
+                    ++count;
+                }
+            }
+            if (count == 1)
+                filePath = possibleFilePath;
+            else
+                qWarning() << "Could not find absolute location of file " << filePath;
+        }
     }
     emit addToTaskWindow(filePath, type, linenumber, description);
 }

src/plugins/projectexplorer/msvcparser.cpp

@@ -31,6 +31,7 @@
 #include "projectexplorerconstants.h"
 
 #include <QtCore/QStringList>
+#include <QtCore/QDir>
 
 using namespace ProjectExplorer;
 
@@ -58,7 +59,7 @@ void MsvcParser::stdOutput(const QString & line)
     QString lne = line.trimmed();
     if (m_compileRegExp.indexIn(lne) > -1 && m_compileRegExp.numCaptures() == 4) {
         emit addToTaskWindow(
-            m_compileRegExp.cap(1), //filename
+            QDir::cleanPath(m_compileRegExp.cap(1)), //filename
             toType(m_compileRegExp.cap(3).toInt()), // PatternType
             m_compileRegExp.cap(2).toInt(), //linenumber
             m_compileRegExp.cap(4) //description
@@ -70,7 +71,7 @@ void MsvcParser::stdOutput(const QString & line)
             fileName.clear();
 
         emit addToTaskWindow(
-            fileName, //filename
+            QDir::cleanPath(fileName), //filename
             toType(m_linkRegExp.cap(2).toInt()), // pattern type
             -1, // line number
             m_linkRegExp.cap(3) // description