Ensure that uic is always run before any C++ source is compiled

It's very, very hard to scan for dependencies with a plain make. So
let's give up and simply enforce that all *.ui files need to be
processed before a *.cpp gets compiled.

This introduces the make target "uicables" (similar to the "mocables"
target that qmake produces) that will compile all .ui files. This
target is now a dependency of all .cpp builds.

In addition, tell make where to find .ui files and their corresponding
ui_*.h files.

Signed-off-by: Thiago Macieira <thiago@macieira.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

Makefile

@@ -107,6 +107,18 @@ SOURCES = \
 	main.cpp \
 	$(RESFILE)
 
+FORMS = \
+	qt-ui/about.ui \
+	qt-ui/divecomputermanagementdialog.ui \
+	qt-ui/diveplanner.ui \
+	qt-ui/downloadfromdivecomputer.ui \
+	qt-ui/maintab.ui \
+	qt-ui/mainwindow.ui \
+	qt-ui/preferences.ui \
+	qt-ui/printoptions.ui \
+	qt-ui/renumber.ui \
+	qt-ui/subsurfacewebservices.ui \
+	qt-ui/tableview.ui
 
 RESOURCES = $(NAME).qrc
 
@@ -155,7 +167,6 @@ MSGLANGS=$(notdir $(wildcard po/*.po))
 # Add files to the following variables if the auto-detection based on the
 # filename fails
 OBJS_NEEDING_MOC =
-OBJS_NEEDING_UIC =
 HEADERS_NEEDING_MOC =
 
 include Rules.mk