wrap ALL_DEPS somewhat sanely

otherwise we'll produce lines with tens of thousands columns when
dealing with QMAKE_BUNDLE_DATA.

Change-Id: Ia2a70f25e4ee1d3fe976027a7c46d234809a3f70
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>

qmake/generators/unix/unixmake2.cpp

@@ -859,7 +859,7 @@ UnixMakefileGenerator::writeMakeParts(QTextStream &t)
     }
 
     t << endl << "all: " << escapeDependencyPath(deps)
-      << valGlue(escapeDependencyPaths(project->values("ALL_DEPS")), " ", " ", "")
+      << valGlue(escapeDependencyPaths(project->values("ALL_DEPS")), " \\\n\t\t", " \\\n\t\t", "")
       << allDeps << endl << endl;
 
     ProString ddir;