Make PPA use Qt 5 by default

Except 12.04 LTS all Ubuntu versions supported by us have Qt 5 packages.
To be able to cleanly switch to it for the next release this patch makes
it the default and adjusts the backport script for 12.04 LTS to use the
old qmake as well as the 'qt4-legacy-compat' flag.

Fixes issue #3

backports/precise

@@ -15,6 +15,9 @@ while (<F>) {
 }
 close(F);
 
+$file =~ s/qt5-default[^,]*/libqt4-dev (>= 4.5.0)/;
+$file =~ s/libqt5opengl5-dev[^,]*/libqt4-opengl-dev (>= 4.5.0)/;
+$file =~ s/libqt5svg5-dev[^,],\n?//;
 $file =~ s/ice35/ice34/g;
 $file =~ s/ libopus-dev,\n//g;
 
@@ -29,6 +32,7 @@ while (<F>) {
 }
 close(F);
 
+$file =~ s/qmake /qmake-qt4 CONFIG*=qt4-legacy-compat /;
 $file =~ s/CONFIG\*=no-bundled-opus \\/CONFIG*=bundled-opus \\/;
 
 open(F, ">debian/rules") or croak;

control

@@ -7,9 +7,9 @@ Uploaders: Thorvald Natvig <thorvald@debian.org>
 Build-Depends: debhelper (>= 7.0.8),
  po-debconf,
  libboost-dev (>= 1.42),
- libboost-python-dev (>= 1.42),
- libqt4-dev (>= 4.5.0),
- libqt4-opengl-dev (>= 4.5.0),
+ qt5-default,
+ libqt5svg5-dev,
+ libqt5opengl5-dev,
  hardening-wrapper,
  libgl1-mesa-dev,
  libasound2-dev,
@@ -31,13 +31,13 @@ Build-Depends: debhelper (>= 7.0.8),
  libxi-dev,
  libcap-dev [linux-any]
 Standards-Version: 3.9.5
-Homepage: http://mumble.sourceforge.net/
+Homepage: http://www.mumble.info/
 
 Package: mumble
 Architecture: any
 Depends: ${shlibs:Depends},
  ${misc:Depends},
- libqt4-sql-sqlite,
+ libqt5sql5-sqlite,
  lsb-release
 Suggests: speech-dispatcher,
  mumble-server
@@ -56,7 +56,7 @@ Architecture: any
 Depends: ${shlibs:Depends},
  ${misc:Depends},
  adduser,
- libqt4-sql-sqlite
+ libqt5sql5-sqlite
 Suggests: mumble-django
 Description: Low latency encrypted VoIP server
  Murmur is the VoIP server component for Mumble. Murmur is installed

rules

@@ -41,8 +41,7 @@ export DH_OPTIONS
 configure: configure-stamp
 configure-stamp:
 	dh_testdir
-	qmake-qt4 -recursive main.pro \
-	CONFIG*=qt4-legacy-compat \
+	qmake -recursive main.pro \
 	CONFIG*=release \
 	CONFIG*=symbols \
 	CONFIG*=no-embed-qt-translations \